Depositional environments

Code Name Parent Code Description

AEOL_FLUV Aeolian Fluvial Environment AEOL An environment of deposition from rivers or relatively large streams in the Aeolian

environment

AEOL_LAKE Aeolian Lake/Lacustrine Environment

AEOL Inland water body in the Aeolian environment

AEOL_WADI_SBKH Aeolian Wadi/Sabkha Environment AEOL Salt-flat in the Aeolian environment

AEOL Aeolian/Eolian Environment SILC_CLST Environment characterized by eroding, transporting, and depositing wind activity.

ALUV_FAN Alluvial Fan Environment ALUV_SEDM

A sloping, fan-shaped body of coarse

material deposited by a stream at the place where it emerges from an upland into a

broad valley or a plain.

ALUV_FLPL Alluvial Flood Plain/Basins

Environment ALUV_SEDM

A strip of relatively flat land bordering an alluvial stream, underlain by overbank

deposits.

ALUV_SEDM Alluvial Sediments Environment CONT An environment of deposition from a river or stream.

ALUV_SWMP Alluvial Swamp Environment ALUV_SEDM

Area around alluvial stream of water-

saturated ground supporting trees, shrubs and grasses.

TRANS_INSL_AMLG_CHNL Amalgamated Channels Environment

TRANS_DEEP_NOFAN_INSL

High density stacking of channels in the deep water intraslope basin environment.

TRANS_INSL_AMLG_SHEET Amalgamated Sheets Environment TRANS_DEEP_NOFAN_I

NSL

High density stacking of sheet deposits in

the deep water intraslope basin environment.

ANST_ABND_CHNL Anastomosed Abandoned Channel

Environment ANST

An anastomosed channel which is no longer

active, but may be filled with deposits.

ANST_CHNL Anastomosed Channel Environment ANST An anastomosed river channel.

ANST_CRVS_CHNL Anastomosed Crevasse Channel

Environment ANST

Small channel cutting across the levee of an

anastomosed channel.

ANST_CRVS_SPLAY Anastomosed Crevasse Splay Environment

ANST

An environment of deposition by outwash

from a break through the levee of the outer

bend of an anastomosed channel.

ANST Anastomosed Environment ALUV_SEDM

Multi-channel rivers that have relatively low

gradients, deep and narrow channels, and

stable banks

ANST_LEVEE Anastomosed Levee Environment ANST A raised embankment deposited along the

shore of an anastomosed channel.

CARB_BACK_REEF Back Reef Environment CARB_REEF Lagoon side back of the carbonate reef core.

TRANS_BARR_BACK_SHORE Barrier Island Backshore Environment

TRANS_BARR

The seaward portion of a barrier coast that

lies above the high tide level and in front of

the barrier crest.

TRANS_BARR_BEACH Barrier Island Beach Environment TRANS_BARR

The seaward portion of a barrier coast that

lies between low and high tide levels,

characterized by temporary accumulations of sand.

TRANS_BARR_EBB_DELTA Barrier Island Ebb Tidal Delta

Environment TRANS_BARR

Small delta forming on the seaward side of

a barrier island, deposited in the falling water portion of the tidal cycle

TRANS_BARR_FLOOD_DELTA Barrier Island Flood Tidal Delta

Environment TRANS_BARR

Small delta forming on the landward side of

a barrier island, deposited in the rising water portion of the tidal cycle

TRANS_BARR_LAGN Barrier Island Lagoon Environment TRANS_BARR

A shallow body of salt or brackish water,

partly or completely separated from a sea or lake by a barrier island.

TRANS_BARR_MARSH Barrier Island Marsh/Swamp

Environment TRANS_BARR

Periodically wet or continually flooded flats

in the barrier coast zone with the surface very shallowly submerged; covered

dominantly with sedges, cattails, rushes, or

other hydrophytic plants.

TRANS_BARR_MUD_FLAT Barrier Island Mud Flat Environment TRANS_BARR

Relatively level area of fine grained

material in a barrier coast, alternately

covered and uncovered by the tide or covered by shallow water, and barren of

vegetation.

TRANS_BARR_TIDAL_CHNL Barrier Island Tidal Channel

Environment TRANS_BARR

Transverse channel across a barrier island, which permits water to sweep in and out of

the lagoon.

TRANS_BARR_WASH_FAN Barrier Island Washover Fan Environment

TRANS_BARR A fan-like deposit of sand washed over a barrier island during a storm.

TRANS_BARR Barrier Island/Strand Plain

Environment TRANS_RIVER_DELTA

Ridge of sand paralleling the shoreline and

extending above sea level only slightly.

CARB_REEF_CREST_BARR Barrier Reef Environment CARB_REEF_CREST

A reef that lies some distance from a

continental coast or volcanic island,

shielding a lagoon of open water from a few hundred feet to several miles wide lies

between the reef and the mainland.

MARN_BASIN_CNTR Basin Center Environment MARN The deep center region of a marine basin.

MARN_BASIN_MRGN Basin Margin Environment MARN The marginal region of a marine basin.

TRANS_DEEP_NOFAN_BASIN Basin Plain Environment TRANS_DEEP_NOFAN A deep marine basin far separated from

coastal or submarine fan processes.

TRANS_BAY_HEAD_DELTA Bay Head Delta Environment TRANS_ESTU A delta formed where a river enters an

estuarine bay.

TRANS_BAY_LAGN Bay/Bay Lagoon Environment TRANS_ESTU

A shallow body of salt or brackish water in

an estuary, partly or completely separated

from the sea by barrier islands.

TRANS_BEACH_BACK_SHORE Beach Backshore Environment TRANS_BARR_BEACH

The portion of a beach that lies between the

mean high-tide level and the zone of sand

dunes or undisturbed vegetation.

TRANS_BEACH_BERM Beach Berm/Coastal Dune

Environment TRANS_BARR_BEACH

A low, impermanent, nearly horizontal or

landward-sloping shelf, ledge, or narrow

terrace on the backshore of a barrier beach, deposited by storm waves.

TRANS_BEACH_FORE_SHORE Beach Foreshore Environment TRANS_BARR_BEACH The portion of a beach between the mean

high and low tide levels.

TRANS_BRAID_DELTA Braid Delta Environment TRANS

A delta with multiple channels that

interweave as a result of repeated

bifurcation and convergence of flow around inter-channel bars.

BRAID_GRVL Braided Gravelly Environment BRAID_STRM A braided stream characterized by excessive

deposition of gravel.

BRAID_SAND Braided Sandy Environment BRAID_STRM A braided stream characterized by excessive

deposition of sand.

BRAID_STRM Braided Streams Environment ALUV_SEDM

A stream characterized by excessive deposition of sand and/or gravel bars so that

water flows in many branching and

reuniting channels.

CARB Carbonate Environment ENVI

Environment characterized by deposition of

carbonates sediments either biologically or

chemically.

CARB_SLOPE Carbonate Slope Environment CARB Sloped outer portion of a carbonate platform

or shelf that descends into deep water.

CARB_TIDAL_FLAT Carbonate Tidal Flat Environment CARB A broad, flat region of muddy carbonate sedimentation, covered and uncovered in

each tidal cycle.

TRANS_CHEN_PLAIN Chenier Plain Environment TRANS_RIVER_DELTA A mud-rich strand plain, occupied by

cheniers and intervening mud-flats with

marsh and swamp vegetation.

BRAID_CHUT_BAR Chute Bar Environment BRAID_SAND A bar deposited in chute-like shape in a

sandy braided stream.

TRANS_BARR_COAST_DUNE Coastal Dune/Berm Environment TRANS_BARR A small terrace in the backshore area of the barrier coast with its terrace facing seaward.

TRANS_COAST_PLAIN Coastal Plain Environment TRANS

A low, broad plain that has as its lower

margin an oceanic shore and its strata horizontal or gently dipping toward the sea,

and generally represents an area of recently

prograded continental sediment.

TRANS_DEEP_FAN_CHNL Deep Fan Channel Environment TRANS_DEEP_FAN Channel in the deep water fan environment.

TRANS_DEEP_FAN_DEBR Deep Fan Debris Flow Environment TRANS_DEEP_FAN

A sediment gravity flow in which fine

sediment and fluids support large particles

in a deep water fan.

TRANS_DEEP_FAN_LEVEE Deep Fan Levee Environment TRANS_DEEP_FAN

A long, broad low ridge or embankment of

sediments beside and parallel to a fan channel in a deep water fan.

TRANS_DEEP_FAN_LOBE Deep Fan Lobe Environment TRANS_DEEP_FAN

A contiguous deposit in a deep water fan

within a localized area, bounded by converging stratigraphic surfaces at the

distal extremity of the fan.

TRANS_DEEP_FAN_OVBA Deep Fan Overbank Environment TRANS_DEEP_FAN A level, low-lying area adjacent to streams that is periodically flooded by stream water

in the deep fan environment.

TRANS_DEEP_FAN_TRANS Deep Fan Transition Environment TRANS_DEEP_FAN Portion of the deep fan environment at the outermost limit of influence of continental

conditions.

DEEP_LAKE Deep Lake Environment LAKE A lake having subenvironments segregated

by depth.

TRANS_DEEP_WATER Deep Water Environment TRANS

An offshore environment where water depths exceed approximately 600 feet [200

m], the approximate water depth at the edge

of the continental shelf

TRANS_DELTA_FRONT Delta Front Environment TRANS_RIVER_DELTA

The seaward portion of a river delta, sloping

downward into the basin at an angle steeper

the delta plain.

TRANS_TIDAL_MARSH Delta Marsh/Swamp Environment TRANS_RIVER_TIDAL

a Periodically wet or continually flooded

area around a tidal stream, of saturated to

shallowly submerged ground supporting trees, shrubs and grasses.

TRANS_MOUTH_BAR Delta Mouth Bar Environment TRANS_RIVER_DELTA

Sand bars deposited at the mouth of a

distributary channel in the river delta environment.

TRANS_DELTA_PLAIN Delta Plain Environment TRANS_RIVER_DELTA

The level or nearly level portion of a river

delta; a flood plain characterized by repeated channel bifurcation and

divergence, multiple distributary channels,

and interdistributary flood basins.

TRANS_SPLAY Delta Splay Environment TRANS_RIVER_DELTA

A flat area of deposition of outwash

material from breaks in the channel levees

in a river delta.

TRANS_RIVER_DELTA Deltaic/River Delta Environment TRANS

An environment of deposition at the mouth

of a river, where flow velocity decreases as

it enters a body of standing water.

TRANS_DEEP_DSTL_LEVEE Distal Fan Levee Environment TRANS_DEEP_FAN_LEV

EE

A long, broad low ridge or embankment of

sediments beside and parallel to a fan

channel in the distal portion of a deep water fan.

TRANS_DEEP_DSTL_FAN Distal/Lower Fan Environment TRANS_DEEP_FAN The portion of a deep water fan formed

farthest from the source area.

TRANS_DIST_CHNL Distributary Channel Environment TRANS_RIVER_DELTA A river branch that flows away from a main

channel and does not rejoin it in the river

delta environment.

DUNE_BRCH Dune Barchan Environment DUNE A crescent-shaped sand dune with horns

pointing downwind.

DUNE_DOME Dune Dome Environment DUNE Mound of sand that is circular or elliptical in shape, with no slip-faces; may be formed

by the modification of stationary barchans.

DUNE Dune Environment AEOL A heap of sand or other loose sediment accumulated by wind.

DUNE_LINR_SEIF Dune Linear/Seif Environment DUNE_LONG

A large, sharp-crested, longitudinal dune or

chain of sand dunes. If unmodified, the crest, in profile, commonly consists of a

succession of curved slip faces produced by

strong, but infrequent cross winds.

DUNE_LONG Dune Longitudinal Environment DUNE A long dune parallel to the direction of the

prevailing wind.

DUNE_PARBL Dune Parabolic Environment DUNE

A sand dune with a long, scoop-shaped form, convex in the downwind direction so

that its horns point upwind, whose ground

plan, when perfectly developed, approximates the form of a parabola.

DUNE_SHEET Dune Sheet Environment DUNE

A large, irregularly shaped, commonly thin,

surficial mantle of eolian sand, lacking the discernible slip faces that are common on

dunes.

DUNE_STAR Dune Star Environment DUNE

Large pyramidal or star-shaped dune with three or more sinuous radiating ridges from

a central peak of sand. This dune has 3 or more slip faces. Produced by variable

winds. This dune does not migrate along the

ground, but does grow vertically.

DUNE_STRK Dune Streak Environment DUNE A dune of fine mineral dust.

DUNE_TRNV Dune Transverse Environment DUNE

A very asymmetric sand dune elongated

perpendicular to the prevailing wind direction, having a gentle windward slope

and a steep leeward slope standing at or

near the angle of repose of sand; it generally forms in areas of sparse vegetation.

ENVI Environment

The sum of all the effects of external

conditions (physical, chemical and biological) on sedimentary deposits.

TRANS_FLUV_CHNL Estuarine Fluvial Channel

Environment TRANS_ESTU

A major passageway or conduit for the flow

of water through the uppermost landward

portion of the estuary environment.

TRANS_FLUV_OVBK Estuarine Fluvial Overbank/Fluvial

Floodplain Environment TRANS_ESTU

A level, low-lying land area adjacent to an

estuary, that is periodically flooded.

TRANS_FLUV_POINT_BAR Estuarine Fluvial Point Bar

Environment TRANS_ESTU

A sand bar deposited by lateral accretion on

the inner shore of a meander loop in the

uppermost landward portion of the estuary environment.

TRANS_FLUV_SPLAY Estuarine Fluvial Splay Environment TRANS_ESTU

An outwash of material from crevasse

channels on the outer bend of a fluvial channel in the uppermost landward portion

of the estuary environment.

TRANS_ESTU_POINT_BAR Estuarine Point Bar Environment TRANS_ESTU

A sand bar deposited by lateral accretion on the inner shore of a meander loop of an

estuary, showing indications of tidal

fluctuation.

TRANS_ESTU_TIDAL_BAR Estuarine Tidal Bar Environment TRANS_ESTU

A longitudinal sand bar in the funnel portion

of an estuary, influenced by tidal

fluctuation.

TRANS_ESTU_TIDAL_INLET Estuarine Tidal Inlet Environment TRANS_ESTU A transverse channel across a barrier island

or jetty at the mouth of an estuary, which

permits water to sweep in and out.

TRANS_ESTU Estuary/Estuarine Environment TRANS_RIVER_DELTA The mouth of a flooded river valley, usually depositing fine-grained sediments in the

brackish water .

TRANS_DEEP_FAN Fan Environment TRANS_DEEP_WATER A deep-water, cone- or fan-shaped body of clastic sediment located seaward of large

river deltas or submarine canyons.

TRANS_FAN_DELTA Fan-Delta Environment TRANS

A body of alluvium, nearly flat and fan-shaped, deposited at or near the mouth of a

mountain canyon where it enters a body of

relatively quiet water.

CARB_FORE_REEF Fore Reef Environment CARB_REEF Ocean side front of the carbonate reef core.

CARB_REEF_CREST_FRNG Fringing Reef Environment CARB_REEF_CREST

A reef that is closely attached to the shore.

There is no lagoon or open water between

the reef and the land upon which it is

attached.

GLCL Glacial Environment SILC_CLST Environment in area affected by a glacier.

TRANS_INCS_VALY Incised Valley Environment TRANS

A valley developed by rejuvenated erosion

downward into the substrate, beginning at

the coastline and progressing upstream.

TRANS_INTER_DIST_BAY Interdistributary Bay Environment TRANS_RIVER_DELTA

Open areas of shallow water within an

active delta between interdistributary

channels.

INTER_DUNE_DEPR Interdune Depression Environment INTER_DUNE Relatively sunken part of the interdune.

INTER_DUNE Interdune Environment AEOL The relatively flat surface, whether sand-

free or sand-covered, between dunes.

TRANS_INSL_LEVEE Intraslope Levee Environment TRANS_DEEP_NOFAN_I

NSL

An embankment of sediments deposited

along the shore of a channel in the deep water intraslope basin environment.

TRANS_INSL_OVBK Intraslope Overbank Environment TRANS_DEEP_NOFAN_I

NSL

A level area of fine-grained deposition

adjacent to intraslope channels formed by flow escaping from channel levees.

TRANS_DEEP_NOFAN_INSL Intraslope/Ponded Basin

Environment TRANS_DEEP_NOFAN

An environment of deposition within an

intraslope depression in deep water not associated with a submarine fan.

LAKE_DELTA Lake Delta Environment LAKE A prograding body of sediment formed at

the mouth of a stream coming into a lake.

LAKE_MUD_FLAT Lake Mudflat Environment LAKE A flat area of mud deposition at the shore of

a lake.

LAKE_PLAYA Lake Playa Environment LAKE

A level or nearly level area that occupies the lowest part of a completely closed lake

basin and that is covered with water at

irregular intervals of distance and time, forming a temporary lake.

LAKE_SHRE Lake Shoreline Environment LAKE The environment at the junction of land

with a lake.

LAKE Lake/Lacustrine Environment CONT Lake environment.

BRAID_LONG_BAR Longitudinal Bar Environment BRAID_SAND A sand bar deposited in longitudinal

orientation in a sandy braided stream.

TRANS_SHLW_LOWER_SHORE Lower Shoreface Environment TRANS_SHLW_SHORE

The lower part of the zone of marine

coastline between mean low-tide level and

normal wave base, offshore from the zone of longshore bars.

MARN Marine Evaporites/Arid Shorelines

And Basins Environment ENVI Environments of deposition from sea water.

MNDR_ABND_CHNL Meandering Abandoned Channel Environment

MNDR

A meandering channel which is no longer

active, but only contains standing water or

sediment fill.

MNDR_CHNL Meandering Channel Environment MNDR The major fluvial channel in a meandering

channel environment.

MNDR_CRVS_CHNL Meandering Crevasse Channel

Environment MNDR

A small channel cutting across the levee of

a meandering channel

MNDR_CRVS_SPLAY Meandering Crevasse Splay Environment

MNDR

An environment of deposition of outwash

material from crevasse channels on the

outer bend of a meandering channel

MNDR Meandering Environment ALUV_SEDM

A fluvial environment in which channels are

shaped like a series of somewhat regular,

loop-like bends.

MNDR_LEVEE Meandering Levee Environment MNDR

An embankment along the outer shore of a

meandering channel loop, formed by

overbank flow

MNDR_OXBOW_LAKE Meandering Oxbow Lake MNDR The abandoned bow-shaped or horseshoe-

shaped part of a former meander loop.

MNDR_POINT_BAR Meandering Point Bar Environment MNDR

A sand bar deposited by lateral accretion on

the inner shore of a meandering channel

loop

TRANS_SHLW_MIDL_SHORE Middle Shoreface Environment TRANS_SHLW_SHORE

The middle part of the zone of marine coastline between mean low-tide level and

normal wave base, in the zone of longshore

bars.

TRANS_DEEP_MIDL_FAN Middle/Mid/Medial Fan Environment

TRANS_DEEP_FAN

Middle portion of a deep water fan, which is

dominated by thick proximal sandstone

turbidites separated by thin mudstones.

CARB_MOUND Mound Environment CARB

A body of carbonate sediment shaped like a

low rounded hill built by colonial

organisms.

TRANS_DEEP_NOFAN Non-Fan Environment TRANS_DEEP_WATER A deep water environment which is not

associated with a submarine fan.

CONT Nonmarine/Continental Environment SILC_CLST

Broad geological term which includes all

environments occurring on the surface of

continents, i.e. non-marine.

TRANS_SHLW_OFF_SHORE Offshore Environment TRANS_SHLW_WATER A shallow water environment situated

offshore on the continental shelf.

TRANS_SHLW_TRANS_OFSH Offshore-Transition Environment TRANS_SHLW_WATER The portion of coastline between normal and storm wave base.

CARB_REEF_CREST_PINA Pinnacle Reef Environment CARB_REEF_CREST A tall, roughly cylindrical mass of carbonate

reef.

TRANS_PRO_DELTA Prodelta Environment TRANS_RIVER_DELTA

An environment of deposition seaward of

the main delta body in the river delta

environment.

TRANS_DEEP_PROX_LEVEE Proximal Fan Levee Environment TRANS_DEEP_FAN_LEV

EE

Embankments of sand adjacent to a

submarine channel in the upper, inner

portion of a deep water fan.

TRANS_DEEP_PROX_FAN Proximal/Upper Fan Environment TRANS_DEEP_FAN

Upper, inner portion of a deep water fan,

near the sediment supply, usually depositing

coarse, channelized debris flows.

CARB_RAMP Ramp Environment CARB

An environment of carbonate deposition

sloping gently seaward from the foot of the

shore face caused by sediments retreating toward the basin.

TRANS_DEEP_NOFAN_RAMP Ramp/Platform Environment TRANS_DEEP_NOFAN

A siliciclastic depositional environment

sloping evenly seaward from the shoreface, not associated with a submarine fan.

CARB_REEF_CREST Reef Crest Environment CARB_REEF The part of the reef where waves break.

CARB_REEF Reef Environment CARB

Environment in which frame-building

organisms producea a raised, subaqueous,

shore-parallel ridge on the shallow

continental shelf.

CARB_REEF_LAGN Reef Lagoon Environment CARB_REEF A shallow sound, channel, pond, or lake

separated from the sea by a carbonate reef.

CARB_RIM_SHELF Rimmed Shelf Environment CARB

A relatively flat, shallowly submerged

platform or shelf of carbonate deposits with an abrupt, steep edge.

CARB_SABKA Sabkha Environment CARB Flat environment of carbonate deposition at

or slightly above mean high tide level.

MARN_SABKA Sabkha Environment MARN

A wide area of marine flats bordering a

lagoon. Evaporite minerals are formed in

such areas.

SHLW_LAKE Shallow Lake Environment LAKE A lake which of shallow depth in which

subenvironments are segregated laterlly.

TRANS_SHLW_WATER Shallow Water Environment TRANS An environment located in water depths less than approximately 300 feet [100 m].

TRANS_INSL_LAYR_SHEET Sheet/Layered Sheets Environment TRANS_DEEP_NOFAN_I

NSL

A large, irregularly shaped, commonly thin,

surficial mantle of sand in the deep water

intraslope basin environment.

TRANS_SHLW_SHORE Shoreface Environment TRANS_SHLW_WATER The zone of shoreline between mean water

level and wave base.

SILC_CLST Siliciclastic Environment ENVI Sedimentary environment characterized by

silicic deposits, generally sand and shale.

TRANS_DEEP_NOFAN_SLOPE Slope Environment TRANS_DEEP_NOFAN An environment of deposition on the continental slope far separated from coastal

processes.

TRANS_DEEP_NOFAN_SLUMP Slump/Mass Transport Complex

Environment TRANS_DEEP_NOFAN

A deep submarine landslide characterized by the downward slipping of one or more

masses of rock or unconsolidated debris

along lystric slip surfaces.

TRANS_DEEP_NOFAN_CANY Submarine Canyon Environment TRANS_DEEP_NOFAN An environment of deposition in a

submarine canyon.

TRANS_DEEP_NOFAN_DEBR Submarine Debris Flow

Environment TRANS_DEEP_NOFAN

A sediment gravity flow in which fine

sediment and fluids support large particles

in deep water not associated with a submarine fan.

TRANS_DELTA_TIDAL_CHNL Tidal Channel Environment TRANS_RIVER_DELTA

A channel in a river delta, which permits

water flow to sweep in and out of tidal lagoons.

TRANS_RIVER_TIDAL_CHNL Tidal Delta Channel Environment TRANS_RIVER_TIDAL

A channel across a tidal delta, which

permits water to sweep in and out of an estuary.

TRANS_RIVER_TIDAL Tidal Delta Environment TRANS_RIVER_DELTA A delta formed at the mouth of an estuary,

dominated by tidal processes.

TRANS_TIDAL_MIXED_FLAT Tidal Delta Mixed Sand/Mud Flat

Environment TRANS_RIVER_TIDAL

A flat region of muddy and sandy mixed

sediment, covered and uncovered in each

tidal cycle in the tidal river delta environment.

TRANS_TIDAL_MUD_FLAT Tidal Delta Mud Flat Environment TRANS_RIVER_TIDAL

A flat region of muddy sediment, covered

and uncovered in each tidal cycle in the tidal river delta environment.

TRANS_TIDAL_SAND_FLAT Tidal Delta Sand Flat Environment TRANS_RIVER_TIDAL

A flat region of sandy sediment, covered

and uncovered in each tidal cycle in the tidal river delta environment.

TRANS_TIDAL_SAND_RIDGE Tidal Sand Ridge Environment TRANS_RIVER_TIDAL

A large-scale, low, subaqueous ridge of

sand parallel to tidal flow in the tidal river delta or tidal shelf environment, that

stretches over wide areas of the seabed and

is formed in conditions of strong tidal currents.

TRANS_DELTA_SAND_RIDGE Tidal Sand Ridge Environment TRANS_RIVER_DELTA

A large-scale, low, subaqueous, ridge of

sand, formed parallel to tidal flow on a shallow shelf in the tide-dominated delta

environment.

TRANS_TIDAL_SAND_WAVE Tidal Sandwave Environment TRANS_RIVER_TIDAL A large transverse bar in the deeper water region of the tidal river delta environment,

caused by storms and tidal currents.

TRANS Transitional Coasts/Paralic

Environment ENVI

Environment in areas where the influence of both continental and marine conditions

occur.

BRAID_TRNV_BAR Transverse Bar Environment BRAID_SAND A sand bar deposited in transverse orientation in a sandy braided stream.

TRANS_SHLW_UPPER_SHORE Upper Shoreface Environment TRANS_SHLW_SHORE

The upper part of the zone of marine

coastline between mean low-tide level and normal wave base, shoreward of the zone of

longshore bars.

VOLC Volcanic Environment SILC_CLST Sedimentary depositional environment in the proximity of an active volcano.

Published by : Yatindra Dutt, M.Sc. Geology University of Pune, india