(Table T1) Lithologic and ichnologic description of ODP Hole 174-1073A

When examined in their sedimentologic and stratigraphic context, ichnofabrics and component ichnofossils can help decipher paleoceanography and sea-level histories from marine deposits (Savrda, 1995, http://www.jstor.org/stable/3515095). Thus far, applications of ichnology in paleoceanographic investigations have been restricted to slowly deposited, predominantly biogenic sediments and/or strata deposited in oxygen-deficient, tectonically active basins. Moreover, ichnologic applications in sequence stratigraphic studies largely have been restricted to strata deposited in relatively shallow-water shelf or foreland basin settings. The limits of previous studies provided impetus for detailed postcruise examination of Quaternary deposits recovered at Ocean Drilling Program (ODP) Site 1073 on the New Jersey margin. These deposits provide the opportunity to assess the sedimentary and ichnofabric record of glacio-eustatic cycles in a passive continental slope setting characterized by relatively rapid accumulation of siliciclastic sediments in an area not far removed from the Laurentide ice margin.
The primary purpose of this data report is to present basic sedimentologic and ichnologic observations made at the decimeter scale throughout the Quaternary sequence from Site 1073. Data analysis and interpretation in the context of climate and sea-level histories, as inferred from oxygen isotopic, palynologic, and seismic studies, are ongoing and will be presented in subsequent papers prepared for open literature (e.g., Savrda et al., in press).

若结合沉积学与地层学背景开展分析，遗迹组构（ichnofabrics）与单体遗迹化石（ichnofossils）可助力从海相沉积中解析古海洋学（paleoceanography）与海平面演化历史（Savrda, 1995, http://www.jstor.org/stable/3515095）。截至目前，遗迹学（ichnology）在古海洋学研究中的应用仅局限于沉积速率缓慢、以生物成因沉积物为主的沉积体，或是缺氧且构造活跃的盆地中的地层。此外，遗迹学在层序地层学研究中的应用也大多局限于相对浅水的陆架或前陆盆地环境下形成的地层。既往研究的局限性推动了对新泽西海缘大洋钻探计划（Ocean Drilling Program, ODP）1073站位所获取的第四纪沉积开展详细的航后研究。该套沉积为在被动大陆斜坡环境下探究冰成全球海平面旋回的沉积与遗迹组构记录提供了契机——此环境以陆源碎屑沉积物快速堆积为特征，且距离劳伦冰盖边缘较近。
本数据报告的核心目的是呈现1073站位第四纪层序全程分米尺度下获取的基础沉积学与遗迹学观测数据。基于氧同位素、孢粉学及地震研究推断的气候与海平面历史背景下的数据分析与解释工作仍在进行中，相关成果将在后续面向公开期刊发表的论文中呈现（例如Savrda等，付印中）。