Examples of using Basalts in English and their translations into Vietnamese
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Basalts are large rocks which can't be moved or destroyed.
The problem is that although these basalts are brought to the surface, we only see a glimpse of their history.
Basalts are important rocks within metamorphic belts, as they can provide vital information on the conditions of metamorphism within the belt.
A large early cone of andesites and basalts collapsed in stages into a caldera 5500 to 3500 years ago.
Basalt Columns Basalt in Northern Ireland Lava- water interface PetDB, the Petrological Database Petrology of Lunar Rocks and Mare Basalts Pillow lava USGS.
Calcium released by basalts binds up CO2 from the atmosphere forming CaCO3 acting thus as a CO2 trap.
The last time an active volcano wouldhave been present in the region to provide the basalts would have been some 500,000 to 1 million years ago.
Included in this category are most basalts of the ocean floor, most large oceanic islands, and continental flood basalts such as the Columbia River Plateau.
The approach announced this week aims to reduce this risk by dissolving CO2 with water andpumping the mixture into volcanic rocks called basalts.
Due to weathering or high concentrations of plagioclase, some basalts are quite light coloured, superficially resembling rhyolite to untrained eyes.
Some lunar basalts contain high abundances of titanium(present in the mineral ilmenite), suggesting that the mantle is highly heterogeneous in composition.
Various metamorphic facies are named after the mineral assemblages androck types formed by subjecting basalts to the temperatures and pressures of the metamorphic event.
The Polish Jura, the Pieniny, and the Western Tatras consist of limestone, while the High Tatras, the Beskids,and the Karkonosze are made up mainly of granite and basalts.
Lunar basalts show exotic textures and mineralogy, particularly shock metamorphism, lack of the oxidation typical of terrestrial basalts, and a complete lack of hydration.
Liquid water was prevalent, and deep oceanic basins are known to have existed attested by the presence of banded iron formations, chert beds,chemical sediments and pillow basalts.
Analyses of these basalts indicate that the mantle is composed predominantly of the minerals olivine, orthopyroxene and clinopyroxene, and that the lunar mantle is more iron-rich than that of the Earth.
Such terranes are often betterpreserved than the exposed parts of continental flood basalts and are therefore a better record of large-scale volcanic eruptions throughout Earth's history.
Basalts and basaltic andesites then created five volcanoes that coalesced to form of the modern mountain between 8000 and 6000 years ago; this largely filled the caldera, but sections of the old caldera walls remain visible just outside the shield.
They also possess a wide range of titanium concentrations(present in the mineral ilmenite),[13] ranging from less than 1 wt% TiO2, to about 13 wt.%. Traditionally,lunar basalts have been classified according to their titanium content, with classes being named high-Ti, low-Ti, and very-low-Ti.
In contrast to continental flood basalts, most igneous oceanic plateaus erupt through young and thin(6- 7 km(3.7- 4.3 mi)) mafic or ultra-mafic crust and are therefore uncontaminated by felsic crust and representative for their mantle sources.
Some noted rock formations involve giant boulders exposed by erosion, such as the Devil's Marbles in Australia's Northern Territory,the Horeke basalts in New Zealand, where an entire valley contains only boulders, and The Baths on the island of Virgin Gorda in the British Virgin Islands.
Most of the Moon's basalts erupted between about 3 and 3.5 billion years ago, but the oldest samples are 4.2 billion years old, and the youngest flows, based on the age dating method of crater counting, are estimated to have erupted only 1.2 billion years ago.
Before 2000, arguments that the Deccan Traps flood basalts caused the extinction were usually linked to the view that the extinction was gradual, as the flood basalt events were thought to have started around 68 Ma and lasted for over 2 million years.
Mutnovsky 3 produced basalts and differentiated dacites and rhiolites(as about 35% lavas and 65% pyroclastics with included lahars), in between the cones of 1 and 2; its huge caldera contains the active fumarole fields that are partly overrun by its own glaciers.
However, the largest volumes of basalt on land correspond to continental flood basalts. Continental flood basalts are known to exist in the Deccan Traps in India, the Chilcotin Group in British Columbia, Canada, the Paraná Traps in Brazil, the Siberian Traps in Russia, the Karoo flood basalt province in South Africa, the Columbia River Plateau of Washington and Oregon.
The basalts of S. Staffordshire, the diorites of Warwickshire, the phonolite of the Wolf Rock(to which he first directed attention), the pitchstones of Arran and the altered igneous rocks near the Land's End were investigated and described by him during the years 1869-1879 in the Quarterly Journal of the Geological Society and in the Geological Magazine.
High-Ti and Low-Ti basalts have been distinguished in the Paraná and Etendeka traps[4] and the Emeishan Traps.[5] Mid-ocean ridge basalt(MORB) is a tholeiitic basalt commonly erupted only at ocean ridges and is characteristically low in incompatible elements.[6][7] E-MORB, enriched MORB N-MORB, normal MORB D-MORB, depleted MORB High-alumina basalt may be silica-undersaturated or-oversaturated(see normative mineralogy).