Seawater-peridotite interactions: First insights from ODP Leg 209, MAR 15°N
نویسندگان
چکیده
منابع مشابه
Leg 209 Preliminary Report
Leg 209 was devoted to drilling mantle peridotites and associated gabbroic rocks along the Mid-Atlantic Ridge from 14° to 16°N. This area was identified at the 1996 Workshop on Oceanic Lithosphere and Scientific Drilling into the 21st Century (OL Workshop) as the ideal region for drilling of a strike line of short holes to sample the upper mantle in a magma-starved portion of a slow-spreading r...
متن کامل209-220 Seepersad Mar 08.indd
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متن کامل1. Leg 209 Summary: Processes in a 20-km-thick Conductive Boundary Layer beneath the Mid-atlantic Ridge, 14°–16°n
This paper provides a summary of postcruise scientific results from Ocean Drilling Program (ODP) Leg 209 available to date, building upon shipboard observations and syntheses summarized in the Leg 209 Initial Results volume. During Leg 209, 19 holes were drilled at 8 sites along the Mid-Atlantic Ridge from 14°43′ to 15°44′N, mainly in residual mantle peridotite intruded by gabbroic rocks, in or...
متن کاملNonvolcanic seafloor spreading and corner-flow rotation
[1] Drilling during ODP Leg 209, dredging, and submersible dives have delineated an anomalous stretch of the Mid-Atlantic Ridge north and south of the 15 200N Fracture Zone. The seafloor here consists dominantly of mantle peridotite with gabbroic intrusions that in places is covered by a thin, discontinuous extrusive volcanic layer. Thick lithosphere (10–20 km) in this region inhibits magma fro...
متن کاملOn Interactions in the RM-ODP
The RM-ODP definition of interaction is subtle and difficult to understand. On closer inspection, we find that it is in fact invalid. We then attempt to establish the author’s original intentions for this concept, and to provide an effective definition. Our investigations lead us to discover some fundamental flaws in the definitions of interface and of behaviour of an object.
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ژورنال
عنوان ژورنال: Geochemistry, Geophysics, Geosystems
سال: 2004
ISSN: 1525-2027
DOI: 10.1029/2004gc000744