10 ENGLISH BOOKS RELATING TO «UNDERCLAY»
Discover the use of
underclay in the following bibliographical selection. Books relating to
underclay and brief extracts from same to provide context of its use in English literature.
1
Pennsylvanian Geology of a Part of the Southern Appalachian ...
Coal 2 inches; underclay 1 inch; coal, shaly % inch; shale, carbonaceous 7}
inches; coal, shaly 4% inches; underclay 7 inches; coal 3 inches . . . . . . . . . .
Underclay, shaly, light gray . _ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sandstone ...
Harold Rollin Wanless, 1946
2
Paleosols and weathering through geologic time: principles ...
UNDERCLAY GENESIS ALLOCHTHONOUS (INHERITED FROM souacet SOIL
BEDROCK BASIN HORIZONS TYPE SEDlMENTATION CHEMICAL PHYSICAL
CONTROL CONTROL DIAGENESIS /\ DIFFERENTIAL SETTLING T0 PEAT WITH
...
Juergen Reinhardt, Wayne R. Sigleo, 1988
3
Geological Survey Bulletin
"Chiefly mixed-layered Illite and montmorillonite] Note. — Source of samples: 1.
Plastic underclay 1 foot 10 inches thick below Nlckell coal bed in upper part of
Breathitt formation, at a point along Route 7, Wrigley quadrangle (pl. 5, section 11
).
4
United States Geological Survey Professional Paper
It is underlain by a few inches to 4 feet of dark-gray carbonaceous, root-traversed,
massive to irregularly bedded siltstone and underclay that contain occasional
fernlike pinnules and large Cordaites leaves. The roof, at points where it was
seen ...
5
Geological Survey Professional Paper
They are most abundant in formations of Pennsylvanian age (Late Carboniferous
of the European time scale) in the Appalachian Basin and in strata of this age in
Missouri. The underclay deposits in Colorado are of Early Cretaceous age ...
Geological Survey (U.S.), 1984
6
SME Mining Engineering Handbook, Third Edition:
The pillar can punch into the underclay, or a general bearing-capacity failure can
develop, with large heave occurring in the floor adjacent to the pillar. Typically,
underclays are in layers that are thin compared to the pillar width, in which case ...
7
U.S. Geological Survey Bulletin
Shocked quartz and anomalous Ir occur above the underclay. Gorceixite-
goyazite (Ba- and Sr-Al phosphate) spherules occur under the smectite-kaolinite
underclay. Recently, Izett (1991a) has shown evidence of teardrop and dumbbell
...
8
Bibliography and Index of Literature on Uranium and Thorium ...
hr., 450 counts/minute, 0.011% eU found by conVersion from assay cupGeiger
counter measurement; no other measurement made; top 3 in. of underclay, 0.115
mr./hr., 549 counts/minute, 0.014% eU found by conversion from assay ...
9
Paleozoic sequence stratigraphy; views from the North ...
1). The distal equivalent, therefore, to a disconformity at the base of channel-
filling sandstone is the top of a paleosol. Prominent paleosols in Middle and
Upper Pennsylvanian strata occur at the contact between underclay and coal.
The idea of ...
Brian J. Witzke, Greg A. Ludvigson, Jed Day, 1996
10
Geology of the Anlauf and Drain Quadrangles, Douglas and ...
Shale — Coal 0 9 Underclay — 6 Shale — Location 13: Altitude at top of coal bed
: 886 feet. Shale and slltstone 6 0 Siltstone 3 0 Coal — 6 Underclay — 4
Sandstone 1 6 Siltstone 6+ 0 Location H: Altitude at top of coal bed : 1,039 feet.
