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Category Archives: Geology
Geologic Time and Human Time Intersect in California
Geologists measure time in ‘periods’ and ‘eras’ lasting millions of years. Our current period is The Quaternary Period that began somewhat less than 2 million years ago. Beginning in the Paleozoic Era (544 to 245 million years ago) and ending … Continue reading →
Posted in Books & Literature, Geography, Geology, History, Science & the Sciences
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Tagged Abraham Lincoln, Almaden, Almaden Quicksilver County Park, Asbury Harpending Jr, Assembling California, “Loma Prieta” earthquake of 1989 California, California, California Gold Rush, California Gold Rush of 1848, cinnabar, Eldridge Moores, Gold Rush, John McPhee, Kalpana Mohan, mercury metal, Mesozoic Era, New Almaden, Ohlone Indians, Paleozoic Era, San Andreas fault, The Quaternary Period
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