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Category Archives: Geography
Circumnavigating Mount Whitney
In five decades of mountaineering in the Sierra Nevada, the wilderness has changed from a wild west dominated by cowboys and pack trains to a highly regulated theme park with lotteries for permits to visit the most desirable locations. With … Continue reading
Posted in Anthropology, Geography, Geology, Mount Whitney, Wilderness
Tagged Hiking, John Muir, Mount Whitney, Mount Whitney Trail, Whitney Portal, Whitney Portal California
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Late Cretaceous Orogenic North American Continental Margin
A huge problem with geological maps is that their daunting psychedelic maze of colors makes it very difficult to bear down on specific features. We recently discovered a GIS series of State scale maps from USGS where it is possible to … Continue reading
Posted in Geography, Geology, Gravity Anomalies, Paleogeography, Plate Tectonics
Tagged Continental margin, Cretaceous, Paleogeography
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Gravity Signals of Extensional Sialic Crustal Regimes
I have always loved the poorly named Great Basin of the Western United States. Yes, its maze of lowlands held a lot of glacial meltwater during the last glacial maximum before letting it percolate out to the Columbia and the Sea … Continue reading
The Hawaiian/Emperor Seamounts and How Island Arcs are Formed
Ever wonder why offshore island arcs should form at random spots in the oceans? No? Don’t worry, its a far fig newton. We offer here the suggestion that the locations are not random, that island arc trenches and probably spreading ridges and … Continue reading
Granite Rafts
Continents are granite rafts. We believe that granite is formed when thoroughly hydrated ocean floor sinks at a subduction zone or trench, often at the edge of a continent. When it sinks deep enough it gets cooked at very high … Continue reading
Posted in Geography, Geology, Gravity Anomalies
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The Dim Sum, Microbial Dark Matter and Wine Dark Seas
The oceans are a microbial soup I like to call the Dim Sum. It is an appropriate pun because it is both dim in the sense we don’t understand it, and a dim sum in that we cannot describe it mathematically. The … Continue reading
A Quick Review of the Carbon Cycle
Quick review of the carbon cycle magnitude per NASA in Gt.: Ocean to atmosphere 90 Microbial respiration land 60 Plant respiration land 60 Human 9 ——— Total surface to atmosphere 219 Photosynthesis land 123 Atmosphere to Ocean 92 ——- Total atmosphere … Continue reading
Posted in Carbon Cycle, Carbon Dioxide Loves to Swim, Climate Change, Geography, Oceanography
Tagged Atmosphere, Carbon cycle, Carbon dioxide, NASA, PH, Weathering
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Wild Idea #6743: Possible Impact Signatures in Seafloor Isochrons
Who knows from what depths the well of ideas flows? For me it is often during the liberation of rote manual work that frees some bandwidth while still requiring a minimal level of focus and blood flow to the brain. … Continue reading
Here’s the Beef, Or the World Economy Explained by a Billion Cows
Grasses coevolved with ungulates (we can call them cows). About 30 million years ago due to declining temperature, humidity, and atmospheric Carbon dioxide a bunch of plants including grasses evolved a more efficient form of photosynthesis called C4. This allowed them … Continue reading
Posted in Anthropology, Climate, Climate Change, Economics, Geography, History, History of Life, Paleoclimate, Salvation from Cows
Tagged Africa, Cattle, Sahara
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