<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ritter, M.D.N.</style></author><author><style face="normal" font="default" size="100%">Erthal, F.</style></author><author><style face="normal" font="default" size="100%">Kosnik, M.</style></author><author><style face="normal" font="default" size="100%">Coimbra, J.C.</style></author><author><style face="normal" font="default" size="100%">Kaufman, D.S.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Spatial variation in the temporal resolution of subtropical shallow-water molluscan death assemblages</style></title><secondary-title><style face="normal" font="default" size="100%">Palaios</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">age determination</style></keyword><keyword><style  face="normal" font="default" size="100%">amino acid</style></keyword><keyword><style  face="normal" font="default" size="100%">Atlantic Ocean</style></keyword><keyword><style  face="normal" font="default" size="100%">bioclastic sediment</style></keyword><keyword><style  face="normal" font="default" size="100%">Bivalvia</style></keyword><keyword><style  face="normal" font="default" size="100%">Brazilian Shelf</style></keyword><keyword><style  face="normal" font="default" size="100%">Calibration</style></keyword><keyword><style  face="normal" font="default" size="100%">dating method</style></keyword><keyword><style  face="normal" font="default" size="100%">depositional environment</style></keyword><keyword><style  face="normal" font="default" size="100%">fossil assemblage</style></keyword><keyword><style  face="normal" font="default" size="100%">Mactra</style></keyword><keyword><style  face="normal" font="default" size="100%">mollusc</style></keyword><keyword><style  face="normal" font="default" size="100%">Mollusca</style></keyword><keyword><style  face="normal" font="default" size="100%">mortality</style></keyword><keyword><style  face="normal" font="default" size="100%">numerical method</style></keyword><keyword><style  face="normal" font="default" size="100%">racemization</style></keyword><keyword><style  face="normal" font="default" size="100%">resolution</style></keyword><keyword><style  face="normal" font="default" size="100%">shallow water</style></keyword><keyword><style  face="normal" font="default" size="100%">shell</style></keyword><keyword><style  face="normal" font="default" size="100%">siliciclastic deposit</style></keyword><keyword><style  face="normal" font="default" size="100%">spatial variation</style></keyword><keyword><style  face="normal" font="default" size="100%">spatiotemporal analysis</style></keyword><keyword><style  face="normal" font="default" size="100%">subtropical region</style></keyword><keyword><style  face="normal" font="default" size="100%">type specimen</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2017</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://www.scopus.com/inward/record.uri?eid=2-s2.0-85029457567&amp;doi=10.2110%2fpalo.2017.003&amp;partnerID=40&amp;md5=363c6fc1ddcbe90e389d1b510fbc7dc7</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">9</style></number><publisher><style face="normal" font="default" size="100%">SEPM Society for Sedimentary Geology</style></publisher><volume><style face="normal" font="default" size="100%">32</style></volume><pages><style face="normal" font="default" size="100%">572-583</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Fossil assemblages are expected to be time-averaged as a result of biological and physical processes that mix skeletal remains. Our quantitative understanding of time-averaging derives primarily from actualistic studies, in which direct numerical dating of individual specimens is used to assess the scale and structure of age mixing in death assemblages (incipient fossil assemblages). Here we examine the age, and the time-averaging of Mactra shells (Bivalvia: Mollusca) gathered from surface mixed siliciclastic-bioclastic sands at three sites on a passive-margin subtropical shelf (the Southern Brazilian Shelf; ∼ 33°S). Sixty Mactra specimens were individually dated using amino acid racemization (AAR) calibrated using radiocarbon ages (n=15). The time-averaging and the total age variability was based on a Bayesian approach that integrates the estimation errors and uncertainties derived from the posterior distribution associated with the AAR calibration average model. The 14C-calibrated AAR ages, pooled across all three sites, are strongly right-skewed with 97% of the individual mollusk shell age estimates ranging from 0 to 6 cal kyr BP. The magnitude of time-averaging varied inversely with the water depth, from &amp;lt; 15 yr at the deepest site (21 m) up to 1020-1250 yr at the shallowest site (7 m). The substantial variation in the temporal resolution across nearby sites, which are located in a seemingly homogenous depositional setting, indicates the presence of notable (if cryptic) spatial heterogeneities in local sedimentation, production, and exhumation, all increasing with water depth. Copyright © 2017, SEPM (Society for Sedimentary Geology).&lt;/p&gt;
</style></abstract><notes><style face="normal" font="default" size="100%">&lt;p&gt;cited By 4&lt;/p&gt;
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