ADVERTISEMENT
  About the SA Blog Network

Posts Tagged "Today in Geohistory"

History of Geology

Geological Treasures in Ancient Egypt

BODSWORTH_2007_Tutankhamun_pendant_with_Wadjet

November 26, 1922 archaeologist Howard Carter (1874-1939) entered the tomb of Tutankhamun, pharaoh in ancient Egypt from 1332 to 1323 BC. The grave was filled with precious jewelry, including a breastplate decorated with a scarab, made from a greenish-yellow gemstone. Fig.1. Pendant found in Tutankhamun’s tomb with gemstone of  desert glass, photo by Jon Bodsworth [...]

Keep reading »
History of Geology

Radioactivity and Earth´s Age

JOYLE_1909_Radioactivity_Geology

For a long time the apparent discrepancy between the age of earth and the age of the cosmos posed a great problem to geologists and astronomers alike. Geologists had calculated, using methods like erosion or sedimentation rates, ages for earth spanning from just three million to 15 billion years. Physicists and astronomers, based mostly on [...]

Keep reading »
History of Geology

Geologizing in the Realm of the Beast

September 8, 1762 the young son of the Yolle‘s, herding the flock of sheep, disappeared near the village of Laval in the province of Dauphiné (France). Only the poor remains of the boy, partially eaten by a mysterious creature, were recovered. The pastor of Laval, named Raphaël, later described an encounter with this creature: “the [...]

Keep reading »
History of Geology

Alexander von Humboldt and the Hand-Beast

BRESSAN_Chiroteriidae

The German naturalist F. W. H. Alexander von Humboldt (born September 14, 1769-1859) is remembered as great geographer and explorer (maybe his name is even the most common on topographic maps), but his early education focused on mining engineering (and economy, as wished by his mother) and he made some important contributions to geology, for [...]

Keep reading »
History of Geology

Happy Birthday Plate Tectonics!

BRESSAN_2014_Hochstegen_Marl_folded_small

September 7, marks the anniversary of the publication of an important paper, “Magnetic Anomalies Over Oceanic Ridges” (1964) describes the discovery of parallel stripes of magnetized igneous rocks along the ocean floor. These stripes are formed when lava pours out along the Mid-Ocean-Ridges, cools and solidifies and pushes aside older oceanic and continental crust. This [...]

Keep reading »
History of Geology

Geology and Generals: How Geology influenced the Gettysburg Campaign (Part I.)

BRESSAN_War_Geology_Gettysburg

“Hence the saying: If you know the enemy and know yourself, your victory will not stand in doubt; if you know Heaven and know Earth, you may make your victory complete.” The Art of War, by Sun Tzù In 1863, after more than two years of Civil War, the Confederate Army of Northern Virginia launches [...]

Keep reading »
History of Geology

June 6, 1944: The Geology of D-Day

Into the Jaws of Death, by Robert F. Sargent (1944)

June 6, 1944 – in planning for D-Day – also geology was considered, as aerial photographs of the shores of Normandy were studied to find suitable landing sites for the invasion. The confluence of larger rivers with the English Channel between the harbors of Le Havre and Cherbourg created sandy shorelines were a landing with [...]

Keep reading »
History of Geology

Baron Cuvier and the Question How Mummies Could Evolve

Toth_Hunefer_Papyrus

“Every one has heard of the Ibis, the bird to which the ancient Egyptians paid religious worship; which they brought up in the interior of their temples, which they allowed to stray unharmed trough their cities, and whose murderer, even though involuntary, was pnished by death; which they embalmed with as much care as their [...]

Keep reading »
History of Geology

William Buckland & The Noble Art of Coprology

BUCKLAND_1829_CoprolitesPlate

“Approach, approach, ingenuous youth, And learn this fundamental truth: The noble science of Geology is founded firmly in Coprology” P.B. Dunacn quoted in BUCKLAND, F. 1883  Coprolites, from the Greek “kopros” and “litos” (or dung-stone), can be regarded as a variety of ichnofossils (trace fossils), defined more precisely as fossilized, large biodepositional structures, documenting the [...]

Keep reading »
History of Geology

The Man who made Mountains

WILLIS_1891_Mechanics_Appalachian_wax_folds

U.S.G.S. engineer Bailey Willis († February 19, 1949) was known for his unorthodox approach to geological questions. Puzzled by the geological structures he discovered in mountain ranges, long before computer-models were available, he constructed a machine to simulate the mountain-forming process. In a box with a moveable piston he folded and crushed layers of beeswax [...]

Keep reading »

More from Scientific American

Scientific American Holiday Sale

Black Friday/Cyber Monday Blow-Out Sale

Enter code:
HOLIDAY 2014
at checkout

Get 20% off now! >

X

Email this Article

X