WebA hypsometric curve of Earth shows that most continental surface exists near _____ and most ocean bottom is found at _____. sea level, 3-5 km (2-3 mi) depth. What are rift zones on Hawaiian volcanoes? ... Shield Composite Syncline Anticline Phreatomagmatic Terrane Graben Horst Focus Epicenter Effusive. 1. Erosion is an example of an ____ process. WebA craton is an ancient part of the Earth's continental crust which has been more or less stable since Precambrian times. Cratons whose ancient rocks are widely exposed at the surface, often with relatively subdued relief, are known as shields.If the ancient rocks are largely overlain by a cover of younger rocks then the 'hidden' craton may be referred to …
4.11: Ancient Parts of Continents- Cratons and Shields
A shield is that part of the continental crust in which these usually Precambrian basement rocks crop out extensively at the surface. Shields can be very complex: they consist of vast areas of granitic or granodioritic gneisses, usually of tonalitic composition, and they also contain belts of sedimentary rocks, often surrounded by low-grade volcano-sedimentary sequences, or greenstone belts. These rocks are frequently metamorphosed greenschist, amphibolite, and granulite facies. It is estimate… Web10) This location marks a convergence area where two continental plates collide, raising up a major alpine chain along which no notable volcanoes are found _11) This marks the major alpine chain adjacent to the Nasca Plate. 12) This Eastern Hemisphere area of covered shield has a mixture of landforms, including plains, hills, and low plateaus. high school varsity
Unit 2: Faulting, Folding, and Volcanism Flashcards Quizlet
Webcontinental shield. Which of the following properly describes the formation of continental crust? The formation of continental crust involves the entire sequence of seafloor spreading, subduction, remelting of oceanic crust, and subsequent rise of … WebJul 1, 2005 · The strata were laid down in a rift valley that opened within the continental shield. As the rift deepened, rivers poured in, dropping their eroded soils onto the valley floor. WebA shield consists of relatively old metamorphic and igneous rock, often simply called crystalline rocks or the crystalline basement. The rocks exposed in the shield represent the kinds of rocks that underline much of the continent. In North America, the continental shield is mostly in Canada and called the CANADIAN SHIELD. how many creamers in coffee