Below are the first 10 and last 10 pages of uncorrected machine-read text (when available) of this chapter, followed by the top 30 algorithmically extracted key phrases from the chapter as a whole.
Intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text on the opening pages of each chapter.
Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages.
Do not use for reproduction, copying, pasting, or reading; exclusively for search engines.
OCR for page 44
44 THE STATE GEOLOGICAL SURVEYS AND
Kentucky coal field, an area of 10,500~squa.re miles, has been completed
since 1920 on essentially one keybed-the No. 4 coal of the Hazard field,
known as the :Firecla.y (Pottsville). These maps have been issued on a
scale of ~ inch to the mile, with a contour interval of 10 feet. In addi-
tion, the subsurface structure of five adjacent counties with Boyd,
Lawrence, Johnson, Martin, and Floyd in the Big Sandy drainage basin
in the eastern part of the State has been mapped and published, the key-
bed being selected in most cases near the producing sand. Structural
maps have also been made and published for many other parts of the
State, on both a county and a regional basis. The Kentucky Geological
Survey now has 360 separate editions of maps printed and engraved,
and in process of distribution.
PRESENT MAIN LINES OF WORK
The Kentucky Geological Survey is now engaged in extending the
area.l and structural (fault pattern) mapping of the State on standard
stratigraphic subdivisions, the maps being published in standard colors.
During the coming field season of 1929, it is planned to map the areal
geology of all the counties in the Jackson Purchase region, that is, the
entire area west of the Tennessee River, involving the Cretaceous, Eocene,
Pliocene, Pleistocene, and Recent formations. Detailed structural and
areal work will be continued in the Western Kentucky fluorspa.r field
and along the periphery of the Western Kentucky coal field in the Mis-
sissippian formations. A new base map of Kentucky on a scale of 1: 500,-
000 compiled ~1925-1928 ~ from detailed topographic quadrangles,
county, and regional maps for all parts of the State was published in
1928. On this base a new geological map of :lientucky has been prepared
from new detailed outcrop surveys and will be published during July,
1929. Detailed areal and structural work on a county unit and qua.d-
rangle basis as occasion may demand will be continued elsewhere in
Kentucky, principally within the Blue Grass region and along the Knob
belt which surrounds it.
It is interesting to note that since its establishment in 1854, the six
separate official geological surveys. of Kentucky have Published 83 stand-
ard library bound volumes and as many or more pamphlets and reports,
all of which total 26,976 pages.
LOUISIANA *
The Louisiana Soil and Geological Survey passed out of existence with
the death of Professor Emerson, twelve years ago. For the past ten years
* Information furnished by Henry V. lIowe, March, 1932.
Representative terms from entire chapter:
coal field
