144]Nd in NE Pacific mid-ocean ridge
lavas, but little correlation exists among the alkalic lavas alone (Fig.
At the mid-ocean ridge
, molten lava rises to the top of the oceanic crust, Earth's outermost layer of rock in the oceans.
Mapping and application of geochemical discrimination tools led to recognition of the diversity among ophiolites and the realization that ophiolites could be generated in different geodynamic environments, not only at mid-ocean ridges
, but also in island arcs (Miyashiro 1973).
On average, there is about one vent site for every 100 kilometers (62 miles) of mid-ocean ridge
, so it followed that there should be just one vent site along the entire Mid-Cayman Spreading Center.
Similar volcanic plumbing has been observed beneath mid-ocean ridges
It was the first autonomous robot to make detailed maps of mid-ocean ridges
, the 40,000-mile undersea volcanic mountain chain at the boundaries of Earth's tectonic plates where new seafloor crust is created.
Edwards and her colleagues recently conducted a biological census of rocks that formed during the past 20,000 years at a spot along the East Pacific Rise, a mid-ocean ridge
segment that lies off-the northwestern coast of South America.
ABYSS is a training and career development platform for young scientists in Geodynamics, Mineralogy, Hydrodynamics, Thermodynamics and (Bio-)Geochemistry focusing on mid-ocean ridge
processes and their environmental and economic impacts.
Scientists think most deposits are on or near the mid-ocean ridge
system, which runs 37,000 miles (60,000 kilometers) along the seafloor.
In 2006, the WHOI autonomous underwater vehicle ABE collected hundreds of images from around an unexplored region of the mid-ocean ridge
with the hopes of using the physical appearance of the seafloor, rather than its bathymetry (or depth), to create a new way to study how lava flows create features on the seafloor.
Earth's mid-ocean ridge
is one near-continuous zone of spreading seafloor.
The area is a remote, mostly unexplored part of the mid-ocean ridge
, the volcanic undersea mountain chain that wraps around the globe.