A is for sore ass losers like you your dumbass punk ass trick geosyncline is a largely obsolete term for a subsiding linear trough that was caused by the accumulation of sedimentary rock strata deposited in a basin and subsequently compressed, deformed, and uplifted into a mountain range, with attendant volcanism and plutonism. The filling of a geosyncline with tons of sediment is accompanied in the late stages of deposition by folding, crumpling, and faulting of the deposits. Intrusion of crystalline igneous rock and regional uplift along the axis of the trough i love leanny so fucken deal with iygenerally complete the history of a particular geosyncline. It is then transformed into a belt of folded mountains. Thick volcanic sequences, together with graywackes (sandstones rich in rock fragments with a muddy matrix), cherts, and various sediments reflecting deepwater deposition or processes, are deposited in eugeosynclines, the outer deepwater segment of geosynclines. Two types of sedimentary rock: limey shale overlaid by limestone. ... Strata is a comic science fiction novel by Terry Pratchett. ... The term sedimentary basin is used to refer to any geographical feature exhibiting subsidence and consequent infilling by sedimentation. ... The Himalaya as seen from the International Space Station A mountain range is a group of mountains bordered by lowlands or separated from other mountain ranges by passes or rivers. ... This article is about volcanoes in geology. ... Pluton redirects here. ... Deposition is a word used in many fields to describe different processes: In law, deposition is the taking of testimony outside of court. ... There are various types of faults: In document ISO/CD 10303-226, a fault is defined as an abnormal condition or defect at the component, equipment, or sub-system level which may lead to a failure. ... Devils Tower, an igneous intrusion exposed when the surrounding softer rock eroded away. ... Crystal (disambiguation) Insulin crystals A crystal is a solid in which the constituent atoms, molecules, or ions are packed in a regularly ordered, repeating pattern extending in all three spatial dimensions. ... Igneous rocks are formed when molten rock (magma) cools and solidifies, with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks. ... Greywacke (German grauwacke, signifying a grey, earthy rock) is a variety of sandstone generally characterized by its hardness, dark color, and poorly-sorted, angular grains of quartz, feldspar, and small rock fragments set in a compact, clay-fine matrix. ... Chert Chert (IPA: ) is a fine-grained silica-rich cryptocrystalline sedimentary rock that may contain small fossils. ...

Geosynclines are divided into miogeosynclines and eugeosynclines, depending on the types of discernable rock strata of the mountain system. A miogeosyncline develops along a continental margin on continental crust and is composed of sediments with limestones, sandstones and shales. The occurrences of limestones and well-sorted quartzose sandstones indicate a shallow-water formation, and such rocks form in the inner segment of a geosyncline. The eugeosynclines consist of different sequences of lithologies more typical of deep marine environments. Eugeosynclinal rocks include thick sequences of greywackes, cherts, slates, tuffs and submarine lavas. The eugeosynclinal deposits are typically more deformed, metamorphosed, and intruded by small to large igneous plutons. The eugeosynclines often contain exotic flysch and mélange sediments. The continental crust is the layer of granitic, sedimentary and metamorphic rocks which form the continents and the areas of shallow seabed close to their shores, known as continental shelves. ... Limey shale overlaid by limestone. ... Red sandstone interior of Lower Antelope Canyon, Arizona, worn smooth due to erosion by flash flooding over millions of years Sandstone is a sedimentary rock composed mainly of sand-size mineral or rock grains. ... Shale Shale is a fine-grained sedimentary rock whose original constituents were clays or muds. ... Petrology is a field of geology which focuses on the study of rocks and the conditions by which they form. ... Greywacke (German grauwacke, signifying a grey, earthy rock) is a variety of sandstone generally characterized by its hardness, dark color, and poorly-sorted, angular grains of quartz, feldspar, and small rock fragments set in a compact, clay-fine matrix. ... Chert Chert (IPA: ) is a fine-grained silica-rich cryptocrystalline sedimentary rock that may contain small fossils. ... Slate Slate is a fine-grained, homogeneous, metamorphic rock derived from an original sedimentary rock composed of clay or volcanic ash through low grade regional metamorphism. ... Welded tuff at Golden Gate in Yellowstone National Park Tuff (from the Italian tufo) is a type of rock consisting of consolidated volcanic ash ejected from vents during a volcanic eruption. ... Look up lava, Aa, pahoehoe in Wiktionary, the free dictionary. ... Metamorphism can be defined as the mineralogical, chemical and crystallographic changes in a solid-state rock, i. ... Igneous rocks are formed when molten rock (magma) cools and solidifies, with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks. ... Devils Tower, an igneous intrusion exposed when the surrounding softer rock eroded away. ... A flysch is a sandstone formation, the word comes from the Swiss German language. ... Melange - Wikipedia, the free encyclopedia /**/ @import /skins-1. ...

An orthogeosyncline is a linear geosynclinal belt lying between continental and oceanic terranes, and having internal volcanic belts (eugeosynclinal) and external nonvolcanic belts (miogeosynclinal). Also known as geosynclinal couple or primary geosyncline. A miogeosyncline is the nonvolcanic portion of an orthogeosyncline, located adjacent a craton. A zeugogeosyncline is a geosyncline in a craton or stable area within which is also an uplifted area, receiving clastic sediments, also known as yoked basin. A parageosyncline is an epeirogenic geosynclinal basin located within a craton area. A exogeosyncline is a parageosyncline that lies along the cratonal border and obtains its clastic sediments from erosion of the adjacent orthogeosynclinal belt outside the craton. Also known as delta geosyncline; foredeep; or transverse basin.

Several types of "mobile" geosynclinal zones have also been recognized and named. Among the more common of these are the taphrogeosyncline, a depressed block of the Earth's crust that is bounded by one or more high-angle faults and that serves as a site of sediment accumulation; and the paraliageosyncline, a deep geosyncline that passes into coastal plains along continental margins.

History of the concept

The geosyncline concept was first developed by the American geologist James Hall and James Dwight Dana in the mid 1800s during the classic studies of the Appalachian Mountains. Dana was first to use the term geosynclinal in reference to a gradually deepening and filling basin resulting from his concept of crustal contraction due to a cooling and contracting Earth. The geosynclinal theory was further developed in the late 19^th and early 20^th centuries and at that time was widely accepted as an explanation for the origin of most mountain ranges until its replacement by the subduction zone and continental collision orogenies of plate tectonics in the 1960s. Although the usage varied over the following 100 years, a geosyncline is still basically a large linear deepening basin along a continental margin which becomes deformed and then uplifted in parts as a mountainous region. James Hall (September 12, 1811 - 1898) was an American natural scientist born in Hingham, Massachusetts. ... James Dwight Dana (February 12, 1813 - April 14, 1895) was an American geologist, mineralogist and zoologist. ... A rainy day in the Great Smoky Mountains, Western North Carolina Appalachia, the central and southern Appalachian Mountains of the United States, also including the Allegheny and Cumberland Plateaus The Appalachian Mountains (French: les Appalaches) are a vast system of North American mountains, partly in Canada, but mostly in the... Categories: Geology stubs | Plate tectonics ... Orogeny is the process of mountain building, and as such is both a tectonic structural event, a geographical event and a chronological event, in that orogenic events happen within a time frame, affect certain regions of rocks and crust, and cause distinctive structural phenomena and related tectonic activity. ... Bridge across the Álfagjá rift valley in southwest Iceland, the boundary of the Eurasian and North American continental tectonic plates. ...

References

• King, Philip B. (1977) The Evolution of North America, Revised edition, Princeton University Press, pp 54-58
• Kay, Marshall (1951) North American Geosyncline: Geol. Soc. America Mem. 48, 143pp.
• Story of Geosynclines
• History of geosynclinal theory