DEPARTMENT OF THE INTERIOR UNITED STATES GEOLOGICAL SURVEY

ggo 97deg101 deg 100 deg 98deg

COLORADO

Boise City O v6 1976 0 Guymon

I KANSAS

0 middot Beaver

()Woodward

IV 1

1 B 7

Ill 1 Illttf

19 31941 Enid

Ponca CityO

61976

lilt

Stillwater 19 5

0 Miami MISSOURI

Bartlesville

Tulsa D

IV 1 I~] 6 1 6 1

() ------------------------4--------------~t---=-~LJ 1979 1979

rr---------------------------------~----------------------------------+--------middot-------------------------l--9_7_6 __97-6-------------------------+--------------------------------+------------------------------------t---~~~~~~0-------------------------t---------- ~ ~ gt

TEXAS

0

l _61

1979

O Sayre

I~]

1979

K

6 1979

Watonga O

6 1962

L 6

1979

VI 2 llol

lltl

190~

El Reno19 h 1978

Y621lt1

1979 1918

If 163 1979

Vl ~61

19 3 1978

bull llt2Yih1Q

1953 1952

lV 2

19 9

Yll 1956

~~n cmiddotOklahoma rty9 B

Ch andler

6 1975

lA_l 1~3

0

1

19 2 6

1971

Muskogee 0 Ilhl 1915

1~1 1976

6 1962

6 1975

6 1971

A

z ~

Lgt --------~--------------------------~----------------~1~9~52~1~95middot--------------i--------~~~tu~-----~------------~---------~~~---------r~r----------------------------------------t----------------------------------------~------------------------------middot----------l---------~1964---------------------------1----------------------------------------l l JV 1973 --middotshy 1939 Q McAlester1963 161 Vlgt V6l

~1 1976 1961 1961

1979 1~1

6 vftb 6 19681975 19 Ada 1976

Altus 0

0 ouncan

V(

III61

1976

Ilb_Tl v6s 1979 1975

V 1 III 1 Ill l

~~979

-

n

6 1979

01974 Ardmore

1

19 7

6 1 611963 1977

~

JilV Durant

1

1 B

Ill 2

19 1

v

Idabel

95deg

MISCELLANEOUS FIELD STUDIES MAP MF-1352

Table 2--List of data sources

2 Heck NH and Bodle R R 1931 United States Earthquakes 1929 U S roast and Geodetic Survey Serial No 511 p l-55

12 Bod le R R 194 1 United States Earthqua kes 1939 U S Coast and Geodetic Survey Serial No 637 p l-69

25 Murphy L M and Cloud W K 1954 United States Earthquakes 1952 U S Coast and Geodetic Survey Serial ~o 773 p l-112

26 Murphy L H and Cloud W K 1955 Unittgtd States Ea r thquakes 1953 U S Coast and Geodetic Survey Serial No 785 p l-51

27 Murphy L M and Cloud w K 1956 Uni ted States Earthquakes 1954 U S Coast and Geodetic Survey Seria l No 793 p l-110

29 Bra-tgte R J and Cloud w K 19 58 United States Earthquakes 1956 U S Coast a nd Geodetic Survey p l-78

32 Eppley R A and Cloud w K 1961 United States Egtlrthquakes 1959 U S Coast and Geode tic Sutvey p 1-115

34 Lander J Land Cloud W K 19 63 Unirerl s-tates Earthquakes 1961 U S Coast and Geodetic Sutvey p 1-106

38 Coffman J L 11nd von Hake C A 1973 EArthquake His tory o f the United States U S Nationa l Oc eanic and Atmospheric Administration No 41-l(through 1970) p 1-208

41 Co f fman J 1 And Cloud w K 1970 United States tltarthquakes 1968 u s EnvironmentAl Seience Setvices Administration p 1-lll

42 von Hake C A n n d Cloud ol K 1971 United States Eart hquakes 1969 u s Nationa l Oceanie and Atmospheric Administration p 1-80

46 Coffman J L von Hlaquoke c A Spence W Carver D L Covington P A Dunphy G J Irby w L Person f J and Stover C W 1975 United States Earthquakes 1973 U S National Oceanic and Atmospheric Administration and U S Geological Survey p 1-112

47 Coffman J L and S tov e r C W 1976 United States Earthquakes 1974 U S National Oceanic and Atmospheric Administration and U S Geological Survey p 1-135

48 Co f f man J L and Stover C W 1977 Un i ted States Earthquakes 1975 U S National Oce anic and Atmospheric Administration and U s Geological Survey p 1-136

49 Coffman J L and Stover C 19 78 United States Earthquakes 1976 U S Na t ional Oceanic and Atmospheric Administration And U S Geological Survey p 1-94

74 U S Geological Survey Ptelimtnary Determi nation of Epicenters Monthly Lis ting and associated Eatthquake Data Repott April 1966 to December 1977 (formetly by U S Coast and Geodetic Survey U S Envirownental Science Services AdministtBtton and U S Na tio nal Oceanic 811cl Atmospheric Administration)

114 Woollard G P 1968 A cata logue of earthqua kes in the United States priot to 19 25 based on unpublished data compiled by Harry Fielding Reid alld un pub lished sources pr ior to 1930 Uawaii Institute of Ge ophysics University of Hawaii Data Report No 10

85 Person W J Simon R B Stover C 1 and Minsch J H 1978 Earthquakes in the United States April-June 1976 U S Geological Survey Circulat 766-R p 1-2 7

90 Minsch J H Stover C W Person W J and Simon R B 1977 Earthquakes in the United States October-December 1975 Us G(_o log ical Survey Circlllar 749-D p 1-27

91 Simon R B Stover C W Person W bull J and Mi n sch J H 19 78 Earthquakes in the United States Janwuy-March 1976 U S Geologica l Sutv e y Cirfulat 766-A p 1-27

10 5 DocekAl J 1970 Eatthquakes o f the stable intetiot with emphasis on the midcontinent v 2 A dissertation presented the facul ty of the grad uAte college in the University of Nebraska in partial fulfillment of requirements for the degree o f Doctor of Philosophy Ann Arbor Hichigan University Microfilms Ltd I-bull 1-332

208 Coffman J L and Stover C W 19 79 Unite d States Eartl1quakes 1977 U S National Oceanic and Atmospheric Administration and U-S Geological Survey p l-81

228 Mill et H bull J J(j56 The Oklahoma earthquake of April 9 1952 Seismological Society of America Bulletin v 46 no 4 p 269-279

229 Stover C W Minsch J H and Reagot B G 1980 Ear thquakes in the Uni ted States January-March 1978 U S Geological SUtve) Circulat 819-A 27 -p

230 Minsch J H Stover C W and 1-lu biak P 1980 Easthquakes in the llnited StAtes Apr il-June 1-978 U S Geological Survey Circular 819-B 57 p

231 Stover C -1 Minseh J H Reagor 13 G and Smith P K 1980 Earthquakes in the United States January-March 1979 U S GeologLcal Survey Circular 836-A 42 _

232 Stover C W Hnbiak P Minsch J H md Person W J 1980 Earthquakes in the United States April-June 1979 U s Geological Survey Ci rculat 836-B 34 p

233 Minsch J H Stover C W Person W J and S1nith P K 1981 Earthquakes i_n t he United States July-S eptembe r 1979 U S Geological Sutvey Circular 836-c 39 p

235 Tryggvason E 1964 Seismicity of Oklahomn Seismological Society of America Annual Meeting unpublished presentation

236 Kalb B 1964 Earthquakes tlwt shook Oklahoma Orbit Magazine of he Sunday Okl a homan Oklahoma City September 27 p 4-7

2 37 Lawson J E Luza K v DuBois R T and FostPcr P H 1979 Inventory detection And cntalog of Oklahoma earthquakes Oklahoma Geological Survey text to accompany Hap GM-19 15 p

238 SeismologleAl Society of America 1952 Seismological Not es Seismological Society of Amerlca Bulletin v 42 no 3 p 271-281

239 Luza K V and Lawson J E 1979 Seismic ity aod tectonic relationships of the Nemaha Uplift in Oklahoma Part II Oklahoma Geological Survey pn-mred fot U S Nuclear Regulatory Commission NUCREGCR-0875 81 p

267 Lawson J E Jr and Luza K V 1980 Oklahoma Earthquakes 1979 Oklahoma Geological Survey Oklahoma Geology Notes v 40 no 3 p 95-105

97deg 96deg102 deg 101 deg Data compliled in 1981SCALE 11000000

2E5=o=lt===gto=o=e===o==iO============ce==o==========i5cO=========c-======7o5======o======i1300 MILES

eo=c=CE=e==CE=0========================~5C0=============75~o=o=o=o=o=~1~00 KILOMETERS

REFERENCES

Algermissen S T 1969 Seismic risk studies in t he United States Fourth Wotld Conference on I NTKOUUCTlON MODIFIED NERCALLI l TE NSLTY SCALE OF 1931

Eatthquake Engineeting Santiago Ch i l e January 13-18 1969 Proceedings v 1 pl4-2719 54 APR 12 23 05 35 l 96 4 G 105 IV 27

Bath Matkus 1966 Eatthqunke e nergy and magnitud e in v 7 of Physics and chemistry of the Eart h 195 4 APR 13 18 48 35 l 96 4 G 105 IV 27 Ox f ord and New York Pergamon Press p 115-1115

The earthquake data shown on thLl map nnd listed in table 1 are a list of earthquakes that were I Not felt -or exeept rare ly undet- es pecial ly f avorabl e f_ircumstances Under certain X Cr8cked ground especially when loose and wet up t o wid th ol several inches 1956 FEB 6 23 30 356 97 5 G 105 VI 29 Evernden J T 1967 MagiJitudc determination at reg ional and near-regional distances in the United

originally used in preparing the Seismic Risk Studies in the United States (Algermissen 1969) which conditions at a nd o ut side the boundary of the area in wllich A grea t shock is f flt fi ssures up to a yard in wi_d Ltl ran p1rAl le l to canfll and stteam hanks Landslides 1956 APR 02 16 03 18 342 956 G lOi v 29 States Seismological Society of America Bulletin v 57 no 4 p 591-639

have been recompiled and updated through 1979 Th[se data have been reexamined wh ieh resulted in sometimes birds animals re ported uneasy rn- disturbed som e times d izzi ness or naJsea considerable from river banks a nd steep coasts Shifted sand and mud hor i zontally on 1956 OCT 30 10 36 Zl 362 958 C 105 40SLM T I 29 Gutenberg R 1945 Amplitudes of surface waves and magni tudes of shallow earthquakes

some revisions of epicenters and intensities as well as assignment of 1nten_stties to earthquakes exper ienced some times t r ees structures l i quids bodies of wlt~tcr may suy--doors beaches and flat l and Changed level of water in wells Threw water o n banks of canals 1959 J UN 12 45 34 8 967 G lOS v 32 Seismological Society of America Bulletin v 3 5 no l p 3-12

that previously had none assigned Only earthquakes located within the boundarY of the State are 1nay svbulling very slomiddotly lakes rive rs etc Damage serious to Jams dikes ebull~bankments Severe to well-built 1959 JUN I7 10 27 07 345 985 0 32 Vl 32 Gutenberg B and Richtet C F 1956 Magnitude and energy of earthquakes Annali di Geoflsica

lis ted in table I even though earthquakes tn bordering sta tes or countries may have been felt or wooden Sttuctures and brLJgef some des troyed Developed dangerous cracks in excellent 1960 MAR 21 30 36 2 958 G 235 III 23618 v 9 no 1 p 1-15

caused damage in the state Intensity values were updated from new and additional data sources that II Felt indoors by few especL1lly on upper floors or by sensitive 0r nervous brick walls lk s troyed most masonry and frame structures also their fo undatio ns Bent 1960 HAR 2J 30 362 958 G 235 1 Il 23618 Tawson J E Jt Luza K V DuBois R T and Foster P H 1979 Inventory detection and

wete not available at the time of original compil-ation Some epicenters were rc~ ocated on the basis per~ons Also as in grad e 1 but of ten mo re not i ceabl y sometimes hanging b bjects rilay railroad rails slightly Tore apart or crushed endwise pipe lines buried in earth Open 1961 JAN 11 01 40 349 955 G 105 v 34 catalog of Oklahoma earthquakes Oklahoma Geological Survey text to accompany Map GM-19 15 p

of new informa t ion The data shown in table 1 are es timates of the most Accurate e picenter swing especially when delica t ely Sulpended sometimes trees structures liquids cracks and broad wavy fo l ds in cement paveme n t s abullHl aspla lt road surfaces 1961 APR 27 03 346 9 5 0 H 05 III 105 Nuttli 0 W 1973 Seismie wave attenuation and magnitude relations for eastern North America

magnitude and intensity of each earthquake on the basis of historical and current information bodies of water may sway doors may swing very slowly sometimes birds animals l 961 APR 27 05 346 95 0 H 105 III lOS Journal of Geophysical Research v 78 no 5 p 876-885

Much of the more refent data was taken ftom a comprehensive study of Oklahoma earthquakes by Lawson reported uneasy or disturbed sometimes dizziness or nil lJSeltl e xperienced XI Distutbances iu grouad many a nd 1videspread Vdrying with gtound material Broad 1961 APR 27 07 30 349 953 G 105 v 34 Richter C F958 Elementary Scismology San Francisco Calif W H Freeman and Co Inc

and others (1979) Some of the aftershocks f rom large earthquakes nrc listed but are incomplete in fissures earth s lumps and land lips i n soft wet ground Eiected water in large 1962 APR 28 06 09 11 353 986 c 235 3 3TUL 768 psand sea - waves wav~s) significant

Wood H 0 and Neumann F 931 Modified Me rcalli Iritensity Scale o f 1931 Seismologicalmany instances especially for ones that occurred before seismic instruments were in universal 1U Felt indoors by several motion usually ra pi d vibrdtion Sometimes not recognized to be amounts chargee with and mud Caused (tidal of 1962 MAV 18 02 40 293 351 954 c 235 2 liTUL nsltIge bull an earthquake at first Juration estima ted in some cases Vibration like t ha t due to magnitude Dnrnage severe to wood-frame stnJCture~ e specially near shock ce nters 1962 AUG lO 20 47 19 0 348 974 X c 235 32TUL

Society o f America Bulletin v 21 no 4 p 277-283 pass i ng of light or li g htly loadeti trucks or heavv trucks some distance away Great to dams dikes embankments often for long distances Few if any (mJsonry) 1962 SEP 01 02 09 561 352 960 c 235 28TJL

Zollweg J 1974 A preliminary study of the seismicity of the central United States 1963-1974 The data in table l were used to compile the sei s micity map The latitude and longitude were Hangibull1g objects may swing slieht ly ~fovements may he appreciabl e on upper l e vels of tall str ucture s remained stand i ng Destroyed lArge wetl-built b ri dg es by th e wr eck irrg of 1962 SEP 07 22 53 440 347 984 X c 235 32TUL

St Lobulli l rvor-~i t y unp11blished undergradua t e report 15 prounded to the nearest tenth of a degree and sorted so that all identical locations were grouped structures Kocked standing motor cars slightly supporting piets or pillars Af fec ted y1e lding wooden bridges l ess Bent 1962 OCT 23 17 55 580 350 985 X c 235 2 9TUL together and counted A triangle represents the epicenter plotted to a ten th of a degree The railroad rails grea tly and thrust tlLem endwise Put pipe lines buried i n earth 1963 FEB 0 2 16 57 390 347 982 X c 235 2 8TUL number of earthquakes at each location is shown on the map by the numbet to the right of the IV Fel t indoo rs by many outdoors by few Awake ned few especially light sleepers completely out of service 1963 MAR 11 09 33 340 346 959 c 235 J1T UL triangle A Roman nume tal to the left of a triangle is the maxlmum Modified Mercalli intensity Frigh te ned no Olle unless apprehens ive from ptevious experience Vibration likl= that due 1963 MAY 07 20 03 29 343 964 K c 23 5 30TUL (Wood and Neumann 1931) of all earthquakes located at that_ geographic position The absence of an to passing of heavy or heavily load ed trucks Sensation 1ike h e avy body striking building XII Damage total--practically all works of cons truction da maged greatly or destroyed 1963 JU N 05 17 02 080 347 96 8 ) c 235 25TUL intensity value indicates that no intensities have been assigned to earthquakes at that l ocation A or falling of hea vy obir-cts ins irl e Rnttling of dishes windows doors 1963 JUN 12 16 38 520 347 968 c 2 3S 2 6TULDisturbances in gro und great nnd variecl numerous shearing cracks Landslides falls

year shown below a triangle is the latest year for whi ch the maximum intensity was recorded gla ssw1re and c r ocke ry clink and c l as h Ctea king of wal l s ftame _especially of rock of significant character slumping o f r i ver banks etc numerous and extensive 1963 J UL 14 OR 10 270 350 977 c 235 26T UL l in the upper tangc of this grade lltJnging objects swung in numerous ins t cbullnces frenched loos e tore off l arge rock mltJsses Fault sl ips in firm rock with notable 1964 FER 02 0822441 351 997 033 c 74 28TUL 6

l1orizontal ami ver tical offset displacements Water snrl underground 237Di sturbed liquids in open vessels slightly Rocked Landing motor cars noticeably channe ls -ace and 1968 JAN 04 22 30 3485 95 55 c IV 41 dis turbe d and modified greJtly lgtammed lakes produced waterfallsEXPLANATION OF THE TABLES 1968 OCT 11 02 25 55 340 964 D 237 23TLJL III 41 deflected tilers etc Waves on ground surfaces seen probably in 02 42 237 41v Fe lt indoor s h pra ctical ly i ll outdoor by many or most outdoors direction seen (ac t ually some 1968 OCT II 40 340 964 n 19TUL 7 IH cases) Distorted l ines of sight and level Thre oh i Prt np11rd i nto t1w a i r 964 2 RTUL IIIestimated Awakened many ot most Frightened few--sli ght excitement a few raiJ 196~ OCT I I 08 55 42 340 D 237 7 41

The data are listed chronologically in table 1 in the following categories date origin time outdoots Buildings trembled throughout Broke dishes glaSSIbulliare to some 1968 OCT 11 09 33 37 340 964 D 237 24TUL 7 Ili 41 N lat i tude W longitude depth hypocenter quality and referenced data sources magnitude and extent Cracked windows-- in tome cases bu t not generally Overturned vases Table l-Chronologtcal listing of earthquakes for thf State of Oklahoma 1968 OCT 12 21 46 44 340 964 n 237 26TUL 214intensity (Modified Mer calli) and intensity source references Table 1 has some basic limitations s mall or uns tabl e objects in many instances with occasional fall Hanging objects 1968 OCT 14 42 54 340 964 0 237 35TUL 7 VI 418in terms of the size (magnitude or intensity) of the eatthquakes listed Prior to 1965 all recorded doors sbulliog generally or considerably Knocked p i ctures against walls or swung 1968 OCT 21 14 10 340 964 D 237 28TUL 2

felt efltthqnakes anbull listed after 1965 only fe lt earthquakes or those with magnitudes above the t hem out o f place Opened or closed doors shutters abruptly Pendulum clocks 1968 NOV 15 10 41 25 340 968 D 237 26TUL 7

25-30 range are listed the lower magnitude leve ls apply mostly to the Eastern United States If stopped started or ran fast or slow Mov ed small objects furnishings the DATE OR IG IN TIME(UTC) LAT LONG DEPTH HY POCFNTFR MAGNITUDEshy lNT~NSITY 1969 HAY 02 tt 33 19 8 352 963 033 c 74 4 6 36TUL 6 v 42

no magnitude was computed and the eatthquake was felt it was included in the earthquake list The latter to slight extent Spilled liquids in smdll amounts f rom ~gte ll-f illed open YEMgt MONTH OAY H M S ( N) ( 1 ) (KM) QUAL RtoF USGS OTHER H-1 REF 1971 MAR 01 19 27 321 35 1 949 ( 237 25TUL 6 low magnitude ev ents located in recent yea rs with dense seismograph networks have not been inc luded containers Trees bushes shnken sLightly 1971 MAR 13 19 22 1)3 352 958 c 237 27TUL 2

lll97 DEC 02 369 98() I 105 lV 105 1973 JAN 10 16 38 153 364 980 c 237 2 7TUL 2 III 46 Listed below is fill explanation of the symbol and codes used in the tables VI Felt hy ill indoors and outdoots Fri gh t ened many exr_itement general some alarm 1900 ll~C 360 968 H 237 IV 23 7 1973 NOV 18 lO 03 52 7 350 9middot 7 c 237 31TllL 2

many ran outdoors Awaken er1 all Persons made to mo ve unstead ily Tr ees bushes 1901 APR 01 1h () 968 H 237 1973 DEC 25 04 11 320 351 945 c 237 2 8TJL 2

1 Leaders ( bull ) indicate information not availahlrgt s hake n sliphtly to mod era tely Liquid set in strong motion Smilll hells mng - -church 190 1 APR OR 13 30 360 Yfi8 H 237 1974 MAY lO 01 15 178 342 973 c 237 26TUL 2 2 La tit ude and longitud e are listed to a hundredth of a degtee if they have been published with chapel school etc Damage light in pootly built bull dings Fall of plaster in mall 19011 J UL 19 3J7 97 7 c lOi l II 84 1974 NOV 10 06 19 186 34 8 967 c 237 27TUL 7

that degree of accuracy Ot greater however most historical events have been published only to Amoun t Ctac ked plaster someJhat especially f in e c racks chimn e ys in some instances 191 0 355 980 G 235 III 235 1974 DEC 16 02 30 214 353 975 010 0 74 26TUL 7 III 47

the nearest degree or tenth of a degree and are therefore listed at this accuracy in table 1 Broke dishes glassware i n considerable quan tit y also some window Fa ll of 1915 OCT 0 8 16 50 317 954 G 105 III 105 197 5 MAR 31 09 52 060 356 953 c 237 29TUL 7

An astetisk () to the right of the longitude indicates that the latitude and longitude k nick-knacks book s pictures Ov erturned f urniture in n1any i nstance s Moved 191(1 355 977 G 105 111 105 1975 JON 16 01 59 282 342 965 c 237 29Tm 7 wete not given in the source reference but were assigned by the compiletS of the data file f urnish ings of moderately heavy kind 1918 sgp 10 16 3U 35 5 98 o 0 38 v 38 197 5 SEP 13 01 25 028 3414 9737 005 c 74 34TUL 2 IV 48 An (x) to the right of the longitude indicates that the event is an explosion a suspected 1911) SEP 11 06 30 355 980 G 105 IV 105 1975 OCT 12 02 58 112 3482 9741 020 c 74 3 2TUL 2

explosion tockburst or a nontectonic event these have not been plotted on the map Vl l Frightened all--gene ra l alarm all ran ou t doors Some Ot many found it 1918 SEP ll 09 00 3JS 980 G 105 Ill lOS 1975 OCT 30 00 37 141 353 968 c 237 27TUL 7

1924 J UN 03 00 40 3h3 965 G 105 I II 14 97353 The letter code in the HYPOCENTER QUAL column is defined below difficult to stand Noticed by persons driving motor cars Trees and bushes 84 197 5 NOV 29 29 409 3452 005 B 74 36TUL 2 VI 90 a Determination of instrumental hypocenters are estimated to be accurate within the ranges of sh1kcn mod e r a tely to strong l y Waves on ponds lakes and running water Water 1926 J UN 20 4 20 1 5 11 9 it 9 G lOS v 105 197 5 DEC 05 29 250 34 1 974 c 237 25TUL 2 II 23 7

latitude and longitude liste d below each range is letter coded as inr1icated turbid from mud sti rred up Tncnv t ng t o some e xt ent of sand or gravel stream banks Rang 1929 DEC 28 00 30 355 98 o F 2 VI 38 1976 liAR 16 07 39 11 5 3 35 43 9560 c 237 27TUL 7 IV 237 A 00deg-01deg large church hells etc Suspended objec t s made to quiver Damage negligible in 1976 MAR 30 06 53 16 3668 10225 c 237 2lTUL v 237193 3 AUG 19 19 30 355 980 G 38 VI 38 B 01deg-02deg hui l dings of good design and cons truc tion slight to moderat e in well-buil 1976 MAR 30 09 27 010 3661 102 OR 005 c 74 2 7TUL 2 v 911935 NOV 29 362 97 o G 235 Ill 236 C 02deg-05deg ordinary bui ldings considerable in poorly buil t ot badly des ignee buildings 1976 APR 18 59 442 3611 9988 005 n 74 34TllL 2 IV 851936 MAR 14 1 7 20 middot~4 0 950 G lOS v 38 16 lJ oso-100 adobe l1ouse old walls (espeeially where laid P without morta r) sp ire s etc 1976 APR I7 02 48 057 34 l 974 0 2 37 24TUL 2 II 491936 JUL 12 00 23 369 103 o Oi lV lOS E 10deg or larger Cracked chimneys to confgtiderlt~ble extent walls to some extent Fall of plts ter in 14 26 V) 1 969 G 105 IV 1OS 1976 APR 04 42 422 36 13 99 84 oos c 74 3STUL 2 IV 491937 JUN 08

1939 JUN 01 0 7 30 35 0 96 4 H 105 lV 12b Determination of noninstrume n tal epicenters from felt data are estimated to be accurate c o n shl er8bl e t o large anwunt also soe stucco Broke numtgtrous indows ~urniture to 1976 JUN 23 08 21 178 341 974 c 237 27TUL 2 IIf 237 within the ranges of latitude and longitude listed below each range is letter coded as some e x t ent Shook clolITI loosened bric kwor k and tiles Rroke lk chimneys a t the 1939 JUN l 7 [)0 350 964 11 2 36 1976 JUN 24 08 02 395 34 I 974 c 237 1 4TUL 7 II 217Ol indicated roof-line (sometimes damaging roofs) Fa ll of cornices from towers and high V lOS 1976 s ~~p 20 09 40 16 2 34 16 97 40 c 217 21TUL 2 IlL 2371941 OCT l R 07 48 354 990 G 105

F 00deg-05deg buildings Dislodged bricks and stones Overturned heavy futniture with dAmage 1942 JUN 12 04 so 3h 4 979 G lOS In ws 1976 OCT 20 04 OS 398 34 75 96 12 c 237 2gtTUL 2 G 05deg-10deg from breaking Damage considerab le to concrete irrigation ditches 1976 OCT 22 17 15 505 3638 9706 c 237 30TUL 2 195 2 APR 09 16 29 337 354 97 8 005 G 228 55PAS 4 VII 25

1952 APR 11 IR 30 -~) 4 978 G 105 liT 105H 10deg-20deg 1976 DEC 08 26 16 7 3492 9573 005 B 237 29TUL 2 ll 8S I 20deg or larger VIII Ft ight genetal--alarm approaches panic Dis tutbed petsons dr i ving motor cars 30 978 105 IV 1977 JAN 06 16 19 540 3470 9673 005 B 208 22TUL 2 II 2081952 APR 11 20 354 G 25 4 The reference identifieation numbets in the HYPOCENTER REF and INTENSITY REF columns indicate Trees s h aken st ro ngl y--b r anches trunks broken off especially palm trees Ejected sand 1977 FEB 20 52 293 31 06 97 37 DOS B 208 l9TUL 2 I[ 2081952 APR 16 354 978 G 238 I1 I 238

the sourees of the hypocenter and intensity They are listed in numerical order in table 2 and mud in small amounts Changes temporary permanent in flow of springs and 105 1977 FEB lO 01 28 163 3bullmiddot 06 9737 005 B 208 t 9TLJL T1 2081952 APR 16 OS 58 354 978 G III 105 5 The magnitudes listed under USGS are mb values (Gu tenberg and Richter 1956) published in the wells dty wells tenewed fl ow in tempe r a ture of spring and well watets Oamage v 38 1977 MAR 26 21 37 126 3406 9737 005 B 208 2 4TUL 4 III 2081952 APR 16 06 OS 354 978 G 38

Preliminary Determination of Epicentets (PDE) by the National Earthquake Information Service U slight in structures (hric k) built especially Lo withs t and earthquakes 1977 JUN 16 02 02 466 34 04 9736 005 B 208 I bull 9TllL 2 II 2081952 APR 16 14 30 354 978 G 231 I Ii 235 S Geological Survey and ptedecessor organizations Associated with the magnitude values listed Considerable in ordinaty ubstantial buildings partial collapse racked 1977 JUN 30 23 03 220 34 19 96 CJ6 005 B 239 ZSTUL 21952 MAY 01 11 40 35 964 G 216 ll 236 under OTHER are the source code and type Type is defined by 1 ~ ML (Richter 1958) 2 mbLg tumbled down wooden houses in some cases threw out pHnel walls in frame structutes 1978 MAR 05 14 lt6 505 3470 95 oo 007 A 239 29TUL 219 52 -lAY 02 01 55 354 964 G 236 II 236 (Nuttli 1973) 3 ~ MS (Bath 1966 or Gutenberg 1945) 4 = mb (Gutenherg and Richtet 1956) broke off decayed piling Fall of wall s Cracked broke solid stone walls 197 8 MAR 09 06 30 508 31bull 01 97 38 005 A 239 26TUL 2 II 22 9

1952 JUL 17 00 30 35 l 978 G 105 Ill 25 and 5 = mbLg modified 6 mbeus (Evernden 1967) and 7- Zollweg 1974) The source codes are seriously Wet ground to some extent also ground on s t eep slopes Twi st ing fall of 1978 MAY 17 23 l 1 157 3553 97 91 005 A 239 23TUL 2 I 239

1952 JUL 17 02 00 354 978 G lOS III 2 5 listed below chimneys columns monuments also f actory stacks towers Moved conspicuouly 105 1978 MAY 18 00 19 224 3350 97 so 005 A 230 2 7TUL 2 III 230

1952 AUG 14 21 40 354 978 G IV 25 PAS - -Seismological Laboratory California Institute of Technology Pasadena Calif overturned vcty heavy furniture 1978 MAY 18 0032middot176 3560 9783 00 5 A 230 21TlJL 2 l[ 230

1952 OCT 08 04 15 35 l 965 G 10S IV 25 SLM- St Louis Univ ersi ty St~ Louis Mo l l7 9 MAR I 8 zn 44 195 35 3 8 93U 005 A 231 29TJL 2 Ill 23110S1953 MAR 16 12 50 354 979 G III 105 TUL- Oklahoma Geophysical Observatory Oklahoma Geological Survey Leonatd Okla IX Panic general Cracked ground conspicuously Damage considerable in (masonry) 1979 JUN 07 39 356 3519 9981 005 232 30TUL 2 IV 232071953 MAR 1 7 13 12 356 980 G 105 V lOS

6 An asterisk () in the INTENSITY MM column indicates that the intensity was assigned by the structures built especially to iths tand earthquakes Threw out of plumb some wood-frame 1979 SEP 13 00 49 230 3522 9936 015 A 233 34TUL 2 1V 2331953 MAR 17 14 25 356 980 G lOS VI 105

compiler on the bas is of the available data at the time the catalog was compiled houses built especial ly to withstand earthquakes great in substantial 1953 G 105 26 1979 S~P 16 15 s 208 35 34 9800 005 A 233 25TUL 2 IV 233J JN 06 17 40 34 8 967 IV M(200)(masonry) bu ildings some collapse in lar ge part or wholly shifted fra me buildings 1954 APR 11 35 l 964 G lOS IV 27 o f f foundations racked frames serious to reservoirs undergr o und pipes some t imes broken MF-~ 2

v SEISMICITY MAP OF THE STATE OF OKLAHOMA

By INER IOR-G EOLOGlCAL SURVEY RESTON VlRGINlA-19~1

C W Stover B G Reagor S T Algermissen and J E Lawson Jr For sale by Branch of Distribution US Geological Survey Box 25286 Federal CeDter Denver CO 802251981