Folds--Offshore of San Francisco Map Area, California

This part of DS 781 presents data for folds for the geologic and geomorphic map of the Offshore of San Francisco map area, California. The vector data file is included in "Folds_OffshoreSanFrancisco.zip," which is accessible from https://pubs.usgs.gov/ds/781/OffshoreSanFrancisco/data_catalog_OffshoreSanFrancisco.html. These data accompany the pamphlet and map sheets of Cochrane, G.R., Johnson, S.Y., Dartnell, P., Greene, H.G., Erdey, M.D., Golden, N.E., Hartwell, S.R., Endris, C.A., Manson, M.W., Sliter, R.W., Kvitek, R.G., Watt, J.T., Ross, S.L., and Bruns, T.R. (G.R. Cochrane and S.A. Cochran, eds.), 2015, California State Waters Map Series—Offshore of San Francisco, California (ver. 1.1, June 2015): U.S. Geological Survey Open-File Report 2015–1068, pamphlet 39 p., 10 sheets, scale 1:24,000, https://dx.doi.org/10.3133/ofr20151068.
Folds were primarily mapped by interpretation of seismic reflection profile data (see field activities S-15-10-NC and F-2-07-NC). The seismic reflection profiles were collected between 2007 and 2010.

本数据集DS 781的此部分提供了加利福尼亚州旧金山近海制图区地质与地貌图所需的褶皱（folds）数据。
该矢量数据文件收录于"Folds_OffshoreSanFrancisco.zip"压缩包中，可通过https://pubs.usgs.gov/ds/781/OffshoreSanFrancisco/data_catalog_OffshoreSanFrancisco.html获取。
本数据集配套由Cochrane, G.R.、Johnson, S.Y.、Dartnell, P.、Greene, H.G.、Erdey, M.D.、Golden, N.E.、Hartwell, S.R.、Endris, C.A.、Manson, M.W.、Sliter, R.W.、Kvitek, R.G.、Watt, J.T.、Ross, S.L.及Bruns, T.R.（G.R. Cochrane与S.A. Cochran编辑）于2015年发布的《加利福尼亚州水域制图系列——加利福尼亚州旧金山近海》（版本1.1，2015年6月）配套的手册与图幅，该成果属于美国地质调查局公开文件报告2015–1068，包含39页手册、10幅图件，比例尺为1:24,000，DOI链接：https://dx.doi.org/10.3133/ofr20151068。
褶皱数据主要通过地震反射剖面（seismic reflection profile）数据解译完成（野外作业编号参见S-15-10-NC与F-2-07-NC），相关地震反射剖面采集于2007年至2010年间。