environmental geologyenvironmental geology a tool in epidemiological studiesa tool in epidemiological studiesas-- ????

moshe shirav – schwartzmoshe shirav – schwartzgeological survey of israelgeological survey of israel

January 9, 2006: IAP 2006: 12.091Session 1: P. ILA 7

Definitions – Terminology …Environmental Geochemistry

is the study of the geologic processesthat interact strongly with the materials

present in the Earth’s crust.The geologic processes:

T weathering of rocks,w soil formation,

s solutes in surface and ground water,s global atmospheric transport of

particulate matter,p global cycling of contaminant

products.

Rock components

Street wash; road dust

Dust; particulate matter

soil

Mo

JudeaMount Scopus

VolcanicsElat

soils40

60

80

100

120

140

160

180

200

220

240

260

280

V

JudeaMount Scopus

VolcanicsElat

soils0

50

100

150

200

250

300

350

Zn

JudeaMount Scopus

VolcanicsElat

soils-0.2

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

Sb

JudeaMount Scopus

VolcanicsElat

soils10

15

20

25

30

35

40

45

50

55

Pb

90

75

25

10

heavy minerals/carbonates

Cd, Pb, Sb, Sn, Zn

Ba - Eocene

P – Mount Scopus Group

Fuel –post 92

Fuel –pre 92

Natural Pb

Tailings, residuesteel factory

Gedora banks

K. Massarik, east

Uncontaminated samples

Dr. Y. Harlavan

"Mount Scopus Group"

Rich in phosphorite

Apatite Ca5(PO4)3(F,Cl,OH)U

50-150 ppm U

Bq/m 3

0 20000 40000 60000 80000 100000

Precambriangranites

other rocks

Triassic

Judea Group (Cretaceous)

Mount Scopus Gr.

high phosphate rocks

Avedat Group (Eocene)

Tertiary basalts

Recent alluvium & soils

National Average – 47.3 Bq/m3

80 Bq/m3

43 Bq/m3

Homes on Non MSG rocks

Homes on MSG rocks

Data layers - geology, water sources, geochemistry, radiation, radon…….

GIS