ore unnerving, because tood and capable of occurringanyime, are type of sraplate quakes. te boundaries, er deptend to propagate over muc notorious suco ted States er of 1811–12. ture started just after midnig by tiveness of animals before quakes is not an old ale, but is in fact ablis at all understood) and ty rupturing noise from deep o t deep. A strong smell of sulfur filled ted for four minutes ating effects to property. Among tnesses ist Joo be in ted out it knocked do least one account, “s in East Coast harbors and .
. . even collapsed scaffolding erected around tol Building in ason, D.C.” OnJanuary 23 and February 4 furtude follo not surprisingly, since suconing. tone could be under Co guess. And raplate rupturings? Somet know.
By tists ly frustrated by tle tood ofterior t to try to do somet it. Specifically, t to drill tinental crust oo to tinuity and to extract a piece of tle for examination at leisure. t if tand ture of tbegin to understand eracted, and to predict earts.
t became kno inevitably, as t ty rous. to lo of Pacific Ocean er off t of Mexico and drill some 17,000 feet tively tal rock. Drilling froma sers is, in trying to drill a op tate Building using a strand of spagti.”
Every attempt ended in failure. t trated 600 feet. ted s and noresults, Congress killed t.
Four years later, Soviet scientists decided to try t onRussia’s Kola Peninsula, near t to oa depteen kilometers. ted, but ts ent. last teen years later, to adepters, or about 7.6 miles. Bearing in mind t t of ts only about 0.3 percent of t’s volume and t t cuteven one-t, we can o erior.
Interestingly, even t, nearly everyt it was surprising.
Seismic udies ists to predict, and pretty confidently, t ter sedimentary rock to a depters, folloe for t 2,300meters and basalt from t, tary layer deeper ted and tic layer all. Moreover, ted, emperature at 10,000 meters of 180degrees centigrade, nearly ted level. Most surprising of all t t depturated