Sediment Thickness and Depth to Basement in Western North Atlantic Ocean Basin

Sediment Thickness and Depth to Basement in Western North Atlantic Ocean Basin
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北大西洋西部海盆沉积物厚度和基底深度

DOI：
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发表时间：
1982
期刊：
影响因子：
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通讯作者：
W. Ludwig
W. Ludwig
中科院分区：
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文献类型：
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作者：
B. Tucholke;R. Houtz;W. Ludwig

文献摘要

被引文献

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200 000多公里的单道和多道地震反射数据被用于绘制北大西洋盆地西部，包括北美东部大陆边缘的沉积厚度等厚图和基底深度图。利用速度回归方程和盆地内17个省的统计速度估计值，将沉积物中的反射时间转换为厚度。15°N ~ 45°N之间的区域。在40°W和85°W之间。以1.0英寸的比例尺用墨卡托投影描绘。每度经度（在赤道约为1：4，383，000）。在本文中，我们概述了用于地图编制的方法，并讨论了在基底结构和沉积厚度分布中观察到的最突出的特征。
More than 200,000 km of single-channel and multi-channel seismic reflection data are used to construct an isopach map of sediment thickness and a map of depth to basement in the western North Atlantic Ocean basin, including the continental margins of eastern North America. Velocity regression equations and velocity estimates determined statistically from 17 provinces in the basin are used to convert reflection time in the sediments to thickness. The region between 15°N and 45°N lat. and between 40°W and 85°W long. is portrayed in Mercator projection at the scale of 1.0 in. per degree longitude (about 1:4,383,000 at equator). In this paper we outline the methods used for map preparation and discuss the most prominent features observed in basement struct re and in sediment thickness distribution.