Scientific Value of Coring the Proposed Southern Appalachian Research Drill Hole (1987) / Chapter Skim
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INTRODUCTION
INTRODUCTION
Pages 5-9
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The proposed drill site would be located in the Inner Piedmont such that underlying Blue Ridge rocks and the intervening Brevard fault zone would be encountered before parautochthonous sedimentary rocks and Grenville basement are penetrated (Figure 2)
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FIGURE 1 Major subdivisions of the southern Appalachians and detail of the proposed site study area. AA" -- abbreviated section shown in Figure 2.
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l»o> Uod«ralaly lo itrongly anlaotroplc madlum lo hlgh grada ortho- and Uodaralaly anlaotroplc low grada Waakly lo modaralaly anliotroplc granltlc and mallc gnaliiai and pluloni TD 10 km (35,000 ft) FIGURE 2 Enlarged portion of Transect Section E-5 (Figure 1)
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Inner Piedmont Amphibolite Granitic Gneiss 0-4 Biotite Gneiss Chauga Belt NW SE Henderson Gneiss Chauga River Fm. Poor Mountain Fm.
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From page 9... ...
Continuous core doubtless would be ideal for answering the fundamental scientific questions posed by the southern Appalachian hole. Less extensive coring, such as 30 percent of the hole, may be a viable option if cuttings are sufficiently coarse for unambiguous field identification and if later downhole sampling is possible (Table 2)
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