Let him remember Lyell's profound remark, that the thickness and extent of sedimentary formations are the result and measure of the degradation which the earth's crust has elsewhere suffered.
So that the lofty pile of sedimentary rocks in Britain, gives but an inadequate idea of the time which has elapsed during their accumulation; yet what time this must have consumed
But if, as some geologists suppose, a range of older rocks underlies the Weald, on the flanks of which the overlying sedimentary deposits might have accumulated in thinner masses than elsewhere, the above estimate would be erroneous; but this source of doubt probably would not greatly affect the estimate as applied to the western extremity of the district.
Yet it may be doubted whether in any quarter of the world, sedimentary deposits, including fossil remains, have gone on accumulating within the same area during the whole of this period.
The hills are of a remarkable form; they consist of flat patches of table-land, surrounded by low perpendicular cliffs, like the outliers of a sedimentary
The rocks of the Lovelock Mine area include sedimentary
and volcanic rocks cut by a larger mass of diorite and by aplitic dikes, all of which are now highly altered.
Among the trips are geologic challenges and engineering solutions for major transportation construction projects in Seattle, grounding line processes of the southern Cordilleran ice sheet in the Puget lowland, the incorporation of sedimentary
rocks into the deep levels of continental magmatic arcs: links between the North Cascades arc and surrounding sedimentary
terranes, and exploring the western Idaho shear zone using the Strabo-Spot data system.
Summary: New Delhi [India], Sep 12 (ANI): The Union Government on Tuesday gave its approval for a significant project to acquire 48,243 line Kilometer 2D seismic data for appraisal of Indian sedimentary
Petrographic studies reveal that the sandstone contain quartz, feldspar and rock fragments of sedimentary
and metasedimentary rocks.
The Company has previously confirmed a target sedimentary
assemblage with the potential of hosting economic lithium-bearing, clay-rich horizons.
The main vegetation type of the CPD is the caatinga sensu stricto, which occurs on the extensive crystalline peneplains that dominate the region, but large areas of sedimentary
terrains also occur in the region (Fig.
It also includes a complete Neogene sedimentary
sequence (itself rare), involving an enormous range of sedimentary
environments and classic dry land geomorphology.