Heavy mineral analyses of sediment samples from the San Francisco Bay coastal system


Autoria(s): Wong, Florence L; Woodrow, Donald L; McGann, Mary L
Cobertura

MEDIAN LATITUDE: 37.858578 * MEDIAN LONGITUDE: -122.453637 * SOUTH-BOUND LATITUDE: 37.425000 * WEST-BOUND LONGITUDE: -123.005730 * NORTH-BOUND LATITUDE: 38.562800 * EAST-BOUND LONGITUDE: -121.308360 * DATE/TIME START: 2010-01-23T00:00:00 * DATE/TIME END: 2010-10-18T00:00:00 * MINIMUM DEPTH, sediment/rock: 0 m * MAXIMUM DEPTH, sediment/rock: 0 m

Data(s)

19/12/2013

Resumo

Heavy or high-specific gravity minerals make up a small but diagnostic component of sediment that is well suited for determining the provenance and distribution of sediment transported through estuarine and coastal systems worldwide. By this means, we see that surficial sand-sized sediment in the San Francisco Bay Coastal System comes primarily from the Sierra Nevada and associated terranes by way of the Sacramento and San Joaquin Rivers and is transported with little dilution through the San Francisco Bay and out the Golden Gate. Heavy minerals document a slight change from the strictly Sierran-Sacramento mineralogy at the confluence of the two rivers to a composition that includes minor amounts of chert and other Franciscan Complex components west of Carquinez Strait. Between Carquinez Strait and the San Francisco Bar, Sierran sediment is intermingled with Franciscan-modified Sierran sediment. The latter continues out the Gate and turns southward towards beaches of the San Francisco Peninsula. The Sierran sediment also fans out from the San Francisco Bar to merge with a Sierran province on the shelf in the Gulf of the Farallones. Beach-sand sized sediment from the Russian River is transported southward to Point Reyes where it spreads out to define a Franciscan sediment province on the shelf, but does not continue southward to contribute to the sediment in the Golden Gate area.

Formato

text/tab-separated-values, 1218 data points

Identificador

https://doi.pangaea.de/10.1594/PANGAEA.804475

doi:10.1594/PANGAEA.804475

Idioma(s)

en

Publicador

PANGAEA

Relação

Barnard, Patrick L; Foxgrover, Amy C; Elias, Edwin; Erikson, Li H; Hein, James R; McGann, Mary L; Mizell, Kira; Rosenbauer, Robert J; Swarzenski, Peter W; Takesue, Renee K; Wong, Florence L; Woodrow, Donald L (2013): Integration of bed characteristics, geochemical tracers, current measurements, and numerical modeling for assessing the provenance of beach sand in the San Francisco Bay Coastal System. Marine Geology, 336, 120-145, doi:10.1016/j.margeo.2012.11.008

Barnard, Patrick L; Foxgrover, Amy C; Elias, Edwin; Erikson, Li H; Hein, James R; McGann, Mary L; Mizell, Kira; Rosenbauer, Robert J; Swarzenski, Peter W; Takesue, Renee K; Wong, Florence L; Woodrow, Donald L (2013): Integration of bed characteristics, geochemical tracers, current measurements, and numerical modeling for assessing the provenance of beach sand in the San Francisco Bay Coastal System. Marine Geology, 345, 181-206, doi:10.1016/j.margeo.2013.08.007

Direitos

CC-BY: Creative Commons Attribution 3.0 Unported

Access constraints: unrestricted

Fonte

Supplement to: Wong, Florence L; Woodrow, Donald L; McGann, Mary L (2013): Heavy mineral analysis for assessing the provenance of sandy sediment in the San Francisco Bay Coastal System. Marine Geology, 345, 170-180, doi:10.1016/j.margeo.2013.05.012

Palavras-Chave #Actinolite; Amphibole; Apatite; Augite; B-2-10-SF; BRP06; BRP08; BRP10; BRP14; Carbonates; CBP11; CBP15; CBP19; CBP33; CBP42; CBP46; Chert; Chromspinel; Clinopyroxene; Clinozoisite; CR_01; CR_03; CR_04; CR_08; DEPTH, sediment/rock; Enstatite; Epidote; Event label; Garnet; GGP01; GGP09; GGP12; GGP15; Glaucophane; Grab; GRAB; Grains, counted/analyzed; HAND; Hand trowel; Hornblende, basaltic; Hornblende, brown; Hornblende, green; Hypersthene; Latitude of event; Lawsonite; Longitude of event; Non-opaque minerals; OSP01; OSP05; OSP13; OSP22; OSP25; OSP28; OSP31; OSP35; Parke Snavely; Rock fragments; Rutile; S-7-10-SF; S-8-10-SF; SAC01; Sample type; Sampling by hand; San Francisco Bay, California; SBP02; SBP13; SFPBCH14; SFPBCH17; SFPBCH19; SFPBCH20; SFPBCH21; SFPBCH22; SFPBCH32; SFPBCH33; SFPCLF09; SJC02; Sphene; SPP07; SPP12; SSP01; Tourmaline; Tremolite; TROW; Zircon; Zoisite
Tipo

Dataset