Shahejie−Shahejie/Guantao/Wumishan and Carboniferous/Permian Coal−Paleozoic Total Petroleum Systems in the Bohaiwan Basin, China (based on geologic studies for the 2000 World Energy Assessment Project of the U.S. Geological Survey)

This report discusses the geologic framework and petroleum geology used to assess undiscovered petroleum resources in the Bohaiwan basin province for the 2000 World Energy Assessment Project of the U.S. Geological Survey. The Bohaiwan basin in northeastern China is the largest petroleum-producing region in China. Two total petroleum systems have been identified in the basin. The first, the Shahejie–Shahejie/Guantao/Wumishan Total Petroleum System, involves oil and gas generated from mature pods of lacustrine source rock that are associated with six major rift-controlled subbasins. Two assessment units are defined in this total petroleum system: (1) a Tertiary lacustrine assessment unit consisting of sandstone reservoirs interbedded with lacustrine shale source rocks, and (2) a pre-Tertiary buried hills assessment unit consisting of carbonate reservoirs that are overlain unconformably by Tertiary lacustrine shale source rocks. The second total petroleum system identified in the Bohaiwan basin is the Carboniferous/Permian Coal–Paleozoic Total Petroleum System, a hypothetical total petroleum system involving natural gas generated from multiple pods of thermally mature coal beds. Low-permeability Permian sandstones and possibly Carboniferous coal beds are the reservoir rocks. Most of the natural gas is inferred to be trapped in continuous accumulations near the center of the subbasins. This total petroleum system is largely unexplored and has good potential for undiscovered gas accumulations. One assessment unit, coal-sourced gas, is defined in this total petroleum system.

New Studies Initiated by the U.S. Geological Survey— Effects of Nutrient Enrichment on Stream Ecosystems

In 2001, the U.S. Geological Survey’s National Water-Quality Assessment (NAWQA) Program began an intensive study of nutrient enrichment—elevated concentrations of nitrogen and phosphorus— in streams in five agricultural basins across the Nation (see map, p. 2). This study is providing nationally consistent and comparable data and analyses of nutrient conditions, including how these conditions vary as a result of natural and human-related factors, and how nutrient conditions affect algae and other biological communities. This information will benefit stakeholders, including the U.S. Environmental Protection Agency (USEPA) and its partners, who are developing nutrient criteria to protect the aquatic health of streams in different geographic regions.

Report of progress - Geological Survey of Canada.

Contents of each report may be found in "List of publications of the Geological survey of Canada. 1906."

Records of the Geological Survey of India.

1867- includes the "Annual report of the Geological survey of India".

Summary of progress of the Geological Survey of Great Britain and the Museum of Practical Geology.

Description based on: 1907.

Report on the geological survey of the State of Iowa, to the Thirteenth General Assembly, January, 1870, containing results of examinations and observations made within the years 1866, 1867, 1868, and 1869.

Photocopy. Iowa City, Iowa, University of Iowa Libraries, 1980.

Publication - Geological Survey Division.

Mode of access: Internet.

Bulletins of the Geological Survey of Victoria.

Description based on: No. 57, published in 1959.

Bulletin - Geological Survey of Alabama.

A quarto volume called Bulletin no. 1, v. 5, was issued in Granville, Ohio, in 1887, with title: List of the fresh-water and marine crustacea of Alabama ... by C.L. Herrick.

Memoirs of the Geological Survey of India.

Each no. has also a distinctive title.

Records of the Geological Survey of India.

Includes the "Annual report of the Geological Survey of India," 1867-

Annotated list of the Avery bird collection in the Alabama museum of natural history (Geological survey museum) /

Half-title: The ornithological notes of Dr. William Cushman Avery, including a catalogue of his Alabama collection. Compiled and edited by Ernest G. Holt.

Memoirs of the Geological Survey of New South Wales.

Latest issue consulted: No. 11, published in 1971.

List of publications of the Geological survey of Canada ...

Mode of access: Internet.

Bulletin of the Geological Survey of China.

Mode of access: Internet.