GeoJeopardy! Fridays(?) #45

Time for GeoJeopardy! Fridays, because it has been a busy weekend so I'm a little late.

- Geology -

Around 132 A.D. Chinese scientist Chang Heng invented an early form of this earthquake detector  

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One of the world's busiest geyser areas lies in a lava field near this Icelandic capital

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In the science of geology, petrographers are concerned with classifying these

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In 2003 it was located at 82 degrees north latitude, 112 degrees west longitude near Ellef Ringness Island

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The glaciers in Alaska are remnants of the last Ice Age, which ended about 11,500 years ago during this epoch

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All the answers as well as any other previous GeoJeopardy! questions can be found over at my website by clicking the link.  

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Questions, images, and videos courtesy of j-archive.com