Mid-ocean ridgesSpreading centersPlate boundariesIn nearly four decades since the discovery of deep-sea vents, one-third of the length of global oceanic spreading ridges has been surveyed for hydrothermal activity. Active submarine vent fields are now known along the boundaries of 46 out of 52 ...
There is evidence that the warm-adapted bacteria that live in the vicinity of mid-ocean ridges are actually the most primitive living bacteria.Biologists have compared the genetic material,DNA and RNA,of all kinds of bacteria to reconstruct their evolutionary relationships.Those features of DNA and...
6.The principle that most warm-adapted bacteria put into practice to obtain energy is quite simple :they harness the energy of naturally occurring chemical reactions. Many of the chemical compounds that emerge from deep within mid-ocean ridges are not stable after the rising water in which they ...
Mid-oceanic ridges are formed as a result of divergent plate boundaries. Answer and Explanation: The correct answer is b. Iceland. Iceland is a significant location in the north-Atlantic mid-oceanic ridge present inside the ocean sea surface...B...
Mid-Ocean Ridge | Definition, Facts & Examples from Chapter 12 / Lesson 12 119K Learn the mid-ocean ridge definition and see a mid-ocean ridge example. Find out what causes mid-ocean ridges and what happens at a mid-ocean ridge. Related...
are regarded as indicating more recent branchings of the evolutionary tree.Using this method,it turns out that the most primitive living bacteria (Archaebacteria)are adapted to warm habitats.This finding suggests that bacteria evolved in such habitats,perhaps in the vicinity of mid-ocean ridges. ...
Mid-Ocean Ridges: Where are the large hydrothermal sulphide deposits in the oceans? METAL enrichments in sediments on open ocean mid-ocean ridge segments and in island arcs have been known for some time, but, to date, no deposits have been found which are rich in copper, zinc and other ...
Using this method, it turns out that the most primitive living bacteria (rchaebacteria) are adapted to warm habitats. This finding suggests that bacteria evolved in such habitats, perhaps in the vicinity of mid-ocean ridges. 1.Life could not have come into being on Earth until after about4...
Seamounts are commonly foundnear the boundaries of Earth's tectonic plates and mid-plate near hotspots. At mid-ocean ridges, plates are spreading apart and magma rises to fill the gaps. What are gyres caused by? Three forces cause the circulation of a gyre:global wind patterns, Earth's rota...
R. Mechanics of stretching elastic-plastic-viscous layers: applications to slow-spreading mid-ocean ridges. Geophys. Monogr. Ser. 106, 305–323 (1998). Google Scholar Choi, E., Buck, W. R., Lavier, L. L. & Petersen, K. D. Using core complex geometry to constrain fault strength. ...