Skip to main content
U.S. flag

An official website of the United States government

Book Chapters

Browse more than 5,500 book chapters authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.

Filter Total Items: 6158

Application of aerial gamma-ray spectrometric and magnetic surveys in geologic mapping: a case study in southern Virginia and northern North Carolina Application of aerial gamma-ray spectrometric and magnetic surveys in geologic mapping: a case study in southern Virginia and northern North Carolina

Aerial gamma-ray spectrometric and magnetic survey maps are valuable aids for geologic mapping where rocks are poorly exposed in south-central Virginia and northernmost North Carolina. Broad low areas on the potassium and thorium gamma-ray survey maps distinguish the Carolina, Spring Hope, and Roanoke Rapids terranes from more highly radiogenic areas of the Raleigh and Triplet terranes...
Authors
J. Wright Horton, David L. Daniels

A spatial and genetic analysis of Cowbird host selection A spatial and genetic analysis of Cowbird host selection

Our study of brood parasitism patterns in forest communities revealed the egg-laying frequency and host selection patterns of female cowbirds. By integrating molecular genetics and spatial data, we have the first published estimate on cowbird laying rates in field studies. The 29 females in the study laid only 1-5 eggs each, much lower than previous estimates from captive cowbirds and
Authors
D.C. Hahn, J.A. Sedgwick, I.S. Painter, N.J. Casna

A state-of-the-art trap for the brown treesnake A state-of-the-art trap for the brown treesnake

No abstract available.
Authors
G.H. Rodda, T. H. Fritts, C.S. Clark, S.W. Gotte, D. Chiszar
Was this page helpful?