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Eos,Vol. 85, No. 49, 7 December 2004 Ocean Drilling Program (ODP) Hole 1256D,
 

Summary: Eos,Vol. 85, No. 49, 7 December 2004
Ocean Drilling Program (ODP) Hole 1256D,
drilled 500 m into oceanic basement in the
Guatemala Basin,is the first hole prepared
with the infrastructure desirable for drilling a
moderately deep hole into the oceanic basement
(1.52 km).A second ocean drilling leg to
this site should finish the recovery of the first
complete section of upper oceanic crust from
lavas down through the dikes into the upper-
most gabbros.
Although Site 1256 has many advantageous
features for a program to drill to the mantle,
planning such an operation now would be
premature,due in part to lack of engineering
experience.In addition,there is significant sci-
entific knowledge to be gained from drilling to
depths of 13 km.Only through the character-
ization of the heterogeneity of the ocean
crust by moderate-depth drilling at this and

  

Source: Acton, Gary - Department of Geology, University of California, Davis

 

Collections: Geosciences