Glacial Sediment Line

Thickness of Glacial Sediment in Connecticut and Long Island Sound Set:
The Thickness of Glacial Sediments in Connecticut and the Long Island Sound Basin layer contains interpretive polygon data representing the thickness of glacial sediments in Connecticut and the Long Island Sound Basin. Compiled as part of the Quaternary Geologic Map of Connecticut and Long Island Sound Basin, Stone and others (1998, 2005). Includes thickness of glacial sediments in 50 foot (0-50, 50-100) and then 100 foot (100-200, 200-300, etc) intervals.
Data derived from original mapping at 1:80,000 scale for the Long Island Sound basin and at 1:125,000 scale on the land in Connecticut. The data are NOT recommended for use at higher resolution scales. The purpose is to show the thickness of glacial sediments on land in Connecticut and in the Long Island Sound Basin. This layer can be used other geologic information shown on the Quaternary Geologic Map of Connecticut and Long Island Sound Basin (USGS publication SIM-2784) as well as other geologic GIS data layers for Long Island Sound derived from the U.S. Geological Survey (USGS) / Connecticut Department of Environmental Protection (DEP) Marine Geology Cooperative Program. Complimentary data layers include the marine transgressive surface (marinet) and thickness of postglacial deposits (pgthkpol) found on Georeferenced Sea-floor Mapping and Bottom Photography in Long Island Sound (USGS Openfile report 00-304).

康涅狄格州与长岛湾冰川沉积物厚度数据集：
康涅狄格州及长岛湾盆地冰川沉积物厚度图层包含用于表征该区域内冰川沉积物厚度的解释性多边形数据。该数据集作为《康涅狄格州与长岛湾盆地第四纪地质图》的组成部分编制完成，由Stone等人（1998、2005）完成相关编绘工作。
数据集按50英尺间隔（0-50英尺、50-100英尺）及后续100英尺间隔（100-200英尺、200-300英尺等）统计冰川沉积物厚度。
数据源自长岛湾盆地1:80000比例尺的原始测绘，以及康涅狄格州陆地1:125000比例尺的原始测绘成果。本数据集不建议在更高分辨率比例尺下使用。
本图层的制作目的为展示康涅狄格州陆地及长岛湾盆地内的冰川沉积物厚度。该图层可与《康涅狄格州与长岛湾盆地第四纪地质图》（美国地质调查局U.S. Geological Survey, USGS 出版物SIM-2784）中的其他地质信息，以及由美国地质调查局（USGS）/康涅狄格州环境保护部（Connecticut Department of Environmental Protection, DEP）海洋地质合作项目产出的长岛湾其他地质GIS图层配套使用。配套数据集包括见于《长岛湾地理参考海底测绘与海底摄影》（USGS公开报告00-304）中的海侵面（marinet）与冰后期沉积物厚度（pgthkpol）。