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Solidified lava flow in Hawaii Sedimentary layers in Badlands National Park, South Dakota Metamorphic rock, Nunavut, Canada. Geology (from Ancient Greek γῆ (gê) 'earth' and λoγία () 'study of, discourse') [1] [2] is a branch of natural science concerned with the Earth and other astronomical objects, the rocks of which they are composed, and the processes by which they change over time. [3]
Earth science or geoscience includes all fields of natural science related to the planet Earth. [1] This is a branch of science dealing with the physical, chemical, and biological complex constitutions and synergistic linkages of Earth's four spheres: the biosphere , hydrosphere / cryosphere , atmosphere , and geosphere (or lithosphere ).
The term "Paleogeoscience" was coined by the Collaboration and Cyberinfrastructure for Paleogeosciences (C4P) [1] research coordination network (RCN), a National Science Foundation EarthCube [2] funded project intending to foster collaboration among paleogeoscientists, paleobiologists, bioinformaticists, stratigraphers, geochronologists, geographers, data scientists, and computer scientists ...
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 ...
For example, the Earth's mean specific gravity (5.515) is far higher than the typical specific gravity of rocks at the surface (2.7–3.3), implying that the deeper material is denser. This is also implied by its low moment of inertia (0.33 M R 2, compared to 0.4 M R 2 for a sphere of constant density). However, some of the density increase is ...
Was there ever a collision of the Earth with another planet Theia, giving birth to the Moon? [1] There is compelling evidence, such as measures of a shorter duration of the Earth's rotation and lunar month in the past, pointing to a Moon much closer to Earth during the early stages of the Solar System.
Harper's Bible Dictionary: 1952 Madeleine S. and J. Lane Miller The New Bible Dictionary: 1962 J. D. Douglas Second Edition 1982, Third Edition 1996 Dictionary of the Bible: 1965 John L. McKenzie, SJ [clarification needed] The New Westminster Dictionary of the Bible: 1970 Henry Snyder Gehman LDS Bible Dictionary: 1979 Harper's Bible Dictionary ...
Today, geobiology has its own journals, such as Geobiology, established in 2003, [10] and Biogeosciences, established in 2004, [11] as well as recognition at major scientific conferences. It got its own Gordon Research Conference in 2011, [ 12 ] a number of geobiology textbooks have been published, [ 3 ] [ 13 ] and many universities around the ...
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