Molecular systematics of shrimp (Decapoda: Bresiliidae) from deep-sea hydrothermal vents, I: Enigmatic 'small orange' shrimp from the Mid-Atlantic Ridge
are juvenile Rimicaris exoculata.
That well-established model began to be questioned 8 years ago, when researchers exploring some sections of the slow-spreading Mid-Atlantic Ridge
found small, widely dispersed areas of exposed mantle rock on the seafloor.
In addition, we clarify the genetic distances between the two known Mid-Atlantic Ridge
This summer, he worked in the lab of marine volcanologist Adam Soule, developing a photomosaic of images from the southern Mid-Atlantic Ridge
, the site of a recent volcanic eruption (see cover).
The commonest vent shrimps recorded from the mid-Atlantic ridge
are Rimicaris exoculata, Chorocaris chacei, and Alvinocaris markensis (Segonzac et al.
Because it provides an oasis of topographical relief in the center of the ocean, we found a high concentration of animals on the Mid-Atlantic Ridge
," he added.
, OFF VENEZUELA -- Over 20 years, WHOI geophysicist Debbie Smith has been chief scientist of a research cruise four times, directing and coordinating scientific activities aboard ships.
The vent system, dubbed the Lost City because its lofty chimneys of carbonate rock can reach the height of an 18-story building, is situated on the side of an undersea mountain about 2,500 kilometers east of Bermuda and 15 km away from the Mid-Atlantic Ridge
(SN: 7/14/01, p.
Additional active hydrothermal fields were discovered along spreading centers and back-arc basins in the Pacific and along the Mid-Atlantic Ridge
(see Tunnicliffe, 1992, for a review).
Iceland is on the Mid-Atlantic Ridge
, where magma wells up to form fresh crust.
This Mid-Atlantic Ridge
has stunning landscapes - lunar valleys and icy waterfalls.
As a mineral exploration consultant and research scientist, Kelemen has been fortunate to work in the mountains of California, Oregon, Washington, British Columbia, Peru, the Yukon, Alaska, the Indian Himalaya, and Karukorum Ranges, East Greenland, along the Mid-Atlantic Ridge
, and in the Oman ophiolite, where oceanic crust has been thrust on land.