Author : Nancy C. Pearre
Publisher :
Page : 384 pages
File Size : 30,78 MB
Release : 1960
Category : Chromium ores
ISBN :
The geology, distribution, production, and mining development of deposits of chromite, titaniferous iron ore, rutile, talc, asbestos, magnesite, sodium-rich feldspar, corundum, and serpentine.
Author : Arthur B. Campbell
Publisher :
Page : 334 pages
File Size : 42,76 MB
Release : 1960
Category : Geology
ISBN :
A reconnaissance study of the geology and mineral deposits of a part of northwestern Montana.
Author : Ann Fowler Rhoads
Publisher : American Philosophical Society
Page : 658 pages
File Size : 46,87 MB
Release : 1993
Category : Nature
ISBN : 9780871692078
The PA Flora Database (PFD) has its roots in the work of Edgar Wherry, John Fogg, Jr., and Herbert Wahl, the "Atlas of the Flora of PA", pub. by the Morris Arboretum of the Univ. of PA. Over a period of 40 years, Wherry and his colleagues gathered data from the major PA herbaria and manually placed a quarter of a million dots on over 3,500 maps, which are reproduced in this volume. The checklist of included taxa has undergone extensive review to reflect recent taxonomic and nomenclatural revisions. Recent discoveries have been added and distribution data has been updated. This volume also includes collections made in the 1990s in conjunction with the PA Natural Diversity Inventory. Extensive illustrations. Reprinted 1996.
Author :
Publisher :
Page : 512 pages
File Size : 43,84 MB
Release : 1961
Category : Geology, Economic
ISBN :
Author : Christopher S. Swezey
Publisher : Geological Society of America
Page : 114 pages
File Size : 26,14 MB
Release : 2020-03-26
Category : Science
ISBN : 0813700574
"This volume contains four guides associated with the 2020 GSA Southeastern and Northeastern Sections Joint Meeting in Reston, Virginia. The localities of these four field trips include various locations in Virginia, Maryland, and West Virginia"--
Author :
Publisher :
Page : 798 pages
File Size : 33,81 MB
Release : 1969
Category : Geology
ISBN :
Author : Robert Beard
Publisher : Rowman & Littlefield
Page : 289 pages
File Size : 20,98 MB
Release : 2015-06-01
Category : Nature
ISBN : 149301496X
With this informative guide, you can explore the mineral-rich areas' of Delaware, Maryland, and Washington D.C., from the beaches to the mountains. It describes the areas' best rockhounding sites and covers popular and commercial sites as well as numerous little-known areas. This handy guide also describes how to collect specimens, includes maps and directions to each site, and lists rockhound clubs. Rockhounding Delaware, Maryland, and Washington D.C. offers a complete introduction to this many-faceted hobby and is an invaluable sourcebook.
Author : Geological Survey (U.S.)
Publisher :
Page : 28 pages
File Size : 29,9 MB
Release : 1976
Category : Delaware
ISBN :
Author : Lisa A. Senior
Publisher :
Page : 132 pages
File Size : 47,15 MB
Release : 1996
Category : Groundwater
ISBN :
Author : Alfred Herman Chidester
Publisher :
Page : 216 pages
File Size : 30,41 MB
Release : 1964
Category : Talc
ISBN :
