Monday, March 30, 2015
Geological Eras First Proposed (1759)
In 1759, Italian geologist Giovanni Arduino (1714-1795) dated a letter to Professor A.Vallisneri the younger, in which Arduino proposed a classification of Earth's surface rocks according to four brackets of successively younger orders: Primary, Secondary, Tertiary and Quaternary. These are the four geological eras used today. The volcanic rocks without fossils which he saw in the Atesine Alps that formed the cores of large mountains he called Primary. Overlying them, the fossil rich rocks of limestone and clay that were found on the prealpine flanks of the mountains he called Secondary. The less consolidated fossil-bearing rocks of the subalpine foothills, he named Tertiary, and the alluvial rock deposits in the plains were the Quaternary. link
Sunday, March 29, 2015
Premiered This Day (1961): Gorgo
Over at Atomic Surgery the good doctors present a double bill to commemorate the day: a story by Steve Ditko from Gorgo #15 and a Gorgo filmbook from Famous Monsters of Filmland #50.
Thursday, March 26, 2015
Died This Day: James Hutton
Hutton (June 3, 1726 - March 26, 1797) is considered to be the father of modern geology. He is accredited with proposing that observed geologic processes have been occurring at a uniform rate since the creation of earth, also know as the theory of unconformities. This led to his controversial suggestion that the earth is incredibly old.
Hutton began to notice geologic processes on his land in the 1750’s by following his soil during rainstorms when it would erode into the sea. He also noticed how long the process took and began to apply this idea to other parts of geology. If it took this long for some soil to move a few miles than how long did it take to form the cliffs by the sea? He also took note of other features in the landscape such as angular unconformities. A breakthrough point occurred for Hutton when he found Siccar’s Point. This site shows the build up of sediment over a long period of time as well as other geologic processes. It was this idea of continuous processes that fascinated Hutton for the rest of his life.
Hutton subsequently moved back to Edinburgh, and became very involved with the Royal Society of Edinburgh. In 1785 he had his friend Joseph Black read his lecture on his theories of earth. This was the first time that his full theory had been made public. He was met with much anger and rejection. Even though we take his ideas for granted today, at the time he was presenting this the oldest proposed age of earth was around six thousand years, as laid forth by the church. While he was able to convince a few by showing them prime field examples such as Glen Tilt and Siccar’s Point, for many it remained too radical an idea to consider.
Text modified from HERE. Image from HERE.
Hutton began to notice geologic processes on his land in the 1750’s by following his soil during rainstorms when it would erode into the sea. He also noticed how long the process took and began to apply this idea to other parts of geology. If it took this long for some soil to move a few miles than how long did it take to form the cliffs by the sea? He also took note of other features in the landscape such as angular unconformities. A breakthrough point occurred for Hutton when he found Siccar’s Point. This site shows the build up of sediment over a long period of time as well as other geologic processes. It was this idea of continuous processes that fascinated Hutton for the rest of his life.Hutton subsequently moved back to Edinburgh, and became very involved with the Royal Society of Edinburgh. In 1785 he had his friend Joseph Black read his lecture on his theories of earth. This was the first time that his full theory had been made public. He was met with much anger and rejection. Even though we take his ideas for granted today, at the time he was presenting this the oldest proposed age of earth was around six thousand years, as laid forth by the church. While he was able to convince a few by showing them prime field examples such as Glen Tilt and Siccar’s Point, for many it remained too radical an idea to consider.
Text modified from HERE. Image from HERE.
Wednesday, March 25, 2015
Fossil Whale Constrains Uplift in East Africa
A 17-My-old whale constrains onset of uplift and climate change in east Africa. 2015. Jacobs, L. et al. PNAS.
Uplift associated with the Great Rift Valley of East Africa and the environmental changes it produced have puzzled scientists for decades because the timing and starting elevation have been poorly constrained.
Now paleontologists have tapped a fossil from the most precisely dated beaked whale in the world -- and the only stranded whale ever found so far inland on the African continent -- to pinpoint for the first time a date when East Africa's mysterious elevation began.
The 17 million-year-old fossil is from the beaked Ziphiidae whale family. It was discovered 740 kilometers inland at an elevation of 620 meters in modern Kenya's harsh desert region, said vertebrate paleontologist Louis L. Jacobs, Southern Methodist University, Dallas. PR
Not a Beaked Whale. Kamandi © DC Comics
Uplift associated with the Great Rift Valley of East Africa and the environmental changes it produced have puzzled scientists for decades because the timing and starting elevation have been poorly constrained.
Now paleontologists have tapped a fossil from the most precisely dated beaked whale in the world -- and the only stranded whale ever found so far inland on the African continent -- to pinpoint for the first time a date when East Africa's mysterious elevation began.
The 17 million-year-old fossil is from the beaked Ziphiidae whale family. It was discovered 740 kilometers inland at an elevation of 620 meters in modern Kenya's harsh desert region, said vertebrate paleontologist Louis L. Jacobs, Southern Methodist University, Dallas. PR
Tuesday, March 24, 2015
Metoposaurus algarvensis, Giant Prehistoric Amphibian from Portugal
Model of Metoposaurus algarvensis.
Metoposaurus algarvensis, crocodile-like amphibian, that lived 230 million years ago, was discovered at an ancient lake in southern Portugal. The creature grew up to 2m in length and lived in lakes and rivers during the Late Triassic Period, living much like crocodiles do today and feeding mainly on fish.The new species was discovered in a large bed of bones where up to several hundred of the creatures may have died when the lake they inhabited dried up, researchers say. Only a fraction of the site - around 4 square meters - has been excavated so far, and the team is continuing work there in the hope of unearthing new fossils.
Most members the group of giant salamander-like amphibians was wiped out during a mass extinction 201 million years ago, long before the death of the dinosaurs. This marked the end of the Triassic Period, when the supercontinent of Pangea - which included all the world's present-day continents - began to break apart. PR
Monday, March 23, 2015
Born This Day: Kenneth Tobey
Tobey (Mar. 23, 1917 - Dec. 22, 2002) made a career of playing “take charge, men of authority”, such as Capt. Hendry in Howard Hawkes, “The Thing From Another World” (1951), and just about every TV series throughout the 60’s and 70’s. More than a few of his appearances were in SF stories, and he played Col. Jack Evans in The Beast from 20,000 Fathoms (1953).
Born This Day: William Smith
March 23, 1769 - August 28, 1839)
From Today In Science History:
An English engineer and geologist who is best known for his development of the science of stratigraphy. Smith's great geologic map of England and Wales (1815) set the style for modern geologic maps, and many of the colorful names he applied to the strata are still in use today.
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From Today In Science History:
An English engineer and geologist who is best known for his development of the science of stratigraphy. Smith's great geologic map of England and Wales (1815) set the style for modern geologic maps, and many of the colorful names he applied to the strata are still in use today.
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Sunday, March 22, 2015
Born This Day: Adam Sedgwick
Adam Sedgwich (March 22, 1785 - January 27, 1873) was an English geologist who first applied the name Cambrian 
to the geologic period of time, now dated at 570 to 505 million years ago. In 1818 he became Woodwardian Professor of Geology at Cambridge, holding a chair that had been endowed ninety years before by the natural historian John Woodward.
He lacked formal training in geology, but he quickly became an active researcher in geology and paleontology. Many years after Sedgwick's death, the geological museum at Cambridge was renamed the Sedgwick Museum of Geology in his honor. The museum is now part of the Department of Earth Sciences at Cambridge University. From Today In Science History.
to the geologic period of time, now dated at 570 to 505 million years ago. In 1818 he became Woodwardian Professor of Geology at Cambridge, holding a chair that had been endowed ninety years before by the natural historian John Woodward.He lacked formal training in geology, but he quickly became an active researcher in geology and paleontology. Many years after Sedgwick's death, the geological museum at Cambridge was renamed the Sedgwick Museum of Geology in his honor. The museum is now part of the Department of Earth Sciences at Cambridge University. From Today In Science History.
Saturday, March 21, 2015
Died This Day: Giovanni Arduino
The Primary order contained Paleozoic formations from the oldest, lowest basaltic rock from ancient volcanoes overlaid with metamorphic and sedimentary rocks which he saw in the Atesine Alps. He classified Mesozoic prealpine foothills as of the Secondary order, Tertiary in the subalpine hills and the Quaternary alluvial deposits in the plains. From Today In Science History
Friday, March 20, 2015
Died This Day: Amadeus William Grabau
From Today In Science History:
Grabau (Jan 9, 1870 – March 20, 1946) was an American geologist and paleontologist, known for his work on world stratigraphic deposits and the deciphering of Earth history. In 1899, he published an early paper that studied the environment of old sedimentary rocks
in light of knowledge of the conditions of life among modern organisms, The Relations of Marine Bionomy to Stratigraph, which was a step toward the development of paleoecology.
For more than a quarter of a century, he worked on the geologic survey of China. In 1940, he developed a theory of rhythms in the growth of the Earth's crust, and of repetitions in mountain building. image
Grabau (Jan 9, 1870 – March 20, 1946) was an American geologist and paleontologist, known for his work on world stratigraphic deposits and the deciphering of Earth history. In 1899, he published an early paper that studied the environment of old sedimentary rocks
in light of knowledge of the conditions of life among modern organisms, The Relations of Marine Bionomy to Stratigraph, which was a step toward the development of paleoecology. For more than a quarter of a century, he worked on the geologic survey of China. In 1940, he developed a theory of rhythms in the growth of the Earth's crust, and of repetitions in mountain building. image
Thursday, March 19, 2015
Triassic Crocodylomorph,Carnufex carolinensis, from North Carolina
Early crocodylomorph increases top tier predator diversity during rise of dinosaurs. 2015. Zanno, L., et al. Scientific Reports.
A newly discovered crocodilian ancestor may have filled one of North America's top predator roles before dinosaurs arrived on the continent. Carnufex carolinensis, or the "Carolina Butcher," was a 9-foot long, land-dwelling crocodylomorph that walked on its hind legs and likely preyed upon smaller inhabitants of North Carolina ecosystems such as armored reptiles and early mammal relatives.
Paleontologists recovered parts of Carnufex's skull, spine and upper forelimb from the Pekin Formation in Chatham County, North Carolina, deposited 231 million years ago in the beginning of the Late Triassic.
"Fossils from this time period are extremely important to scientists because they record the earliest appearance of crocodylomorphs and theropod dinosaurs, two groups that first evolved in the Triassic period, yet managed to survive to the present day in the form of crocodiles and birds," says Lindsay Zanno.
Paleontologists recovered parts of Carnufex's skull, spine and upper forelimb from the Pekin Formation in Chatham County, North Carolina, deposited 231 million years ago in the beginning of the Late Triassic.
"Fossils from this time period are extremely important to scientists because they record the earliest appearance of crocodylomorphs and theropod dinosaurs, two groups that first evolved in the Triassic period, yet managed to survive to the present day in the form of crocodiles and birds," says Lindsay Zanno.
Thursday, March 05, 2015
Premiered This Day: The Creature From The Black Lagoon
Tuesday, March 03, 2015
Premiered This Day (1959): The Giant Behemoth
Behemoth, the Sea Monster (1959) is an American-British science-fiction film co-production, which is an unacknowledged remake of Ray Harryhausen's The Beast from 20,000 Fathoms (1953), also co-scripted and directed by Eugène Lourié. Released in the United States as The Giant Behemoth, the film starred Gene Evans and André Morell. From wiki
