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The late Cenomanian represents the highest mean sea level observed in the Phanerozoic eon, the past 600 million years (about 150 meters above present-day sea levels). A corollary is that the highlands were at all time lows, so the landscape on Earth was one of warm broad shallow seas inundating low-lying land areas on the precursors to today's ...
Castell Carreg Cennen means castle on a rock next to (the river) Cennen, the river name itself being a reference either to cen meaning lichen or perhaps a personal name. [1] The dramatic limestone precipice was originally the site of a native Welsh castle, possibly constructed by The Lord Rhys (d.
Ford and railway bridge near Meusydd. The Afon Cennen is a river in the county of Carmarthenshire, south Wales. [1] It rises on the northern slopes of the Black Mountain to the east of the summit of Tair Carn Uchaf and flows north to Blaencennen Farm, then westwards past Carreg Cennen Castle, continuing through the village of Trap where it exits the Brecon Beacons National Park.
Also called Indianite. A mineral from the lime-rich end of the plagioclase group of minerals. Anorthites are usually silicates of calcium and aluminium occurring in some basic igneous rocks, typically those produced by the contact metamorphism of impure calcareous sediments. anticline An arched fold in which the layers usually dip away from the fold axis. Contrast syncline. aphanic Having the ...
The following outline is provided as an overview of and topical guide to geology: . Geology – one of the Earth sciences – is the study of the Earth, with the general exclusion of present-day life, flow within the ocean, and the atmosphere.
SCK•CEN, Belgian nuclear research institute (Centre d'Étude de l'énergie Nucléaire) Chemical and Engineering News , a publication of the American Chemical Society Abbreviation or code
In 1896, the United States Geological Survey released N.H. Darton's 1045-page Catalogue and index of contributions to North American geology, 1732-1891 and also commenced an incremental publication of Fred Boughton Weeks' serial work Bibliography and index of North American geology, paleontology, petrology, and mineralogy for 1892 and 1893.
The Folk classification, in geology, is a technical descriptive classification of sedimentary rocks devised by Robert L. Folk, an influential sedimentary petrologist and Professor Emeritus at the University of Texas.