#Fold mountains
20-Mar-95 22:56:12
Sb: #174873-#Fold mountains
Fm: Doug Mitchell 70621,702
To: Kamron Kirkconnell 73740,2246
Hi, Kamron–
>> The key here is the geological table included in the formation. If it has
the layers of time then it was crust regardless of what happened in the course
of time.
As I said, there was one other article that remarked there was some continental
material there, and some maps showing a small fragment from
Antarctica/Australia that was running around loose for a while near the ridge
then disappeared from the maps. It may have been a stray continental lump that
got plastered with megatons of basalt from being in the wrong place at the
wrong time. Or maybe the continental nature was an assumption invalidated by
the seismic and sampling indications mentioned in the large igneous provinces
article.
>> Has there been any drilling and cores taken in the Hawaiian Islands?
Probably, but I do not know of them. Wake me up when Mauna Loa spits out a
piece of continental crust… I gather volcanic eruptions are liable to bring
up occasional stray chunks of deep rock.
–Doug