Mars* Oceans Formed Early, Possibly Aided by Massive Volcanic Eruptions
April 20 | Berkeley University of California
April 20 | Berkeley University of California
Rocks on Mars
April 20 | Geology.com
Mudstone on Mars: This photograph, taken by NASA*s Mars Rover Curiosity in 2015, shows sedimentary rocks of the Kimberley Formation in Gale Crater. The crater contains thick deposits of finely laminated mudstone that represent fine-grained sediments deposited in a standing body of water that persisted for a long period of time - long enough to allow sediments to accumulate to significant thickness. Image by NASA.
April 20 | Geology.com
Mudstone on Mars: This photograph, taken by NASA*s Mars Rover Curiosity in 2015, shows sedimentary rocks of the Kimberley Formation in Gale Crater. The crater contains thick deposits of finely laminated mudstone that represent fine-grained sediments deposited in a standing body of water that persisted for a long period of time - long enough to allow sediments to accumulate to significant thickness. Image by NASA.
USGS Rolls Out Groundbreaking Earthquake Study: The HayWired Earthquake Scenario
April 19 | United States Geological Survey
April 19 | United States Geological Survey
How the Panama Canal Took a Huge Toll On the Contract Workers Who Built It
April 19 | Smithsonian.com
April 19 | Smithsonian.com
The Secrets of Garnet Reveal Source of Water To Fuel Powerful Volcanoes and Earthquakes
April 17 | April 17
April 17 | April 17
Color Varieties of Garnet
April 17 | Geology.com
Gem Garnets: Most people think that garnet is a red gemstone. However, garnet occurs in a wide variety of colors. Clockwise from the top left: red almandine (Madagascar), green tsavorite (Tanzania), yellow mali (Mali), orange spessartite (Mozambique), pink malaya (Tanzania), green merelani mint (Tanzania), red pyrope (Ivory Coast), green demantoid (Namibia), purple rhodolite (Mozambique), and orange hessonite (Sri Lanka). Seven out of eight of the garnets above are from Africa, the relatively new source of spectacular garnets.
April 17 | Geology.com
Gem Garnets: Most people think that garnet is a red gemstone. However, garnet occurs in a wide variety of colors. Clockwise from the top left: red almandine (Madagascar), green tsavorite (Tanzania), yellow mali (Mali), orange spessartite (Mozambique), pink malaya (Tanzania), green merelani mint (Tanzania), red pyrope (Ivory Coast), green demantoid (Namibia), purple rhodolite (Mozambique), and orange hessonite (Sri Lanka). Seven out of eight of the garnets above are from Africa, the relatively new source of spectacular garnets.
A New Measurement of Seismic Energy Release that Can be Applied to Large Earthquakes
April 17 | University of California, Santa Cruz
April 17 | University of California, Santa Cruz
Modeling Future Earthquake and Tsunami Risk in Southeast Japan
April 17 | University of Massachusetts Amherst
April 17 | University of Massachusetts Amherst
Decade of Fossil Collecting in Africa Gives New Perspective on Triassic Period, Emergence of Dinosaurs
April 17 | University of Washington
April 17 | University of Washington
Try Your Own Rock-Rounding Experiments in a Rock Tumbler
April 17 | RockTumbler.com (affiliated with Geology.com)
April 17 | RockTumbler.com (affiliated with Geology.com)
New Study in Oxygen-Deprived Black Sea Provides Insights on Future Carbon Budget
April 17 | University of Miami
Satellite image of the Black Sea by Norman Kuring, NASA.
April 17 | University of Miami
Satellite image of the Black Sea by Norman Kuring, NASA.
Emerald: The Bright Green Gem of the Beryl Mineral Family
April 17 | Geology.com
Emeralds from Russia: Photograph of emerald crystals in mica schist from the Malyshevskoye Mine, Sverdlovsk Region, Southern Ural, Russia. The large crystal is about 21 millimeters in length. Photograph copyright iStockphoto / Epitavi.
April 17 | Geology.com
Emeralds from Russia: Photograph of emerald crystals in mica schist from the Malyshevskoye Mine, Sverdlovsk Region, Southern Ural, Russia. The large crystal is about 21 millimeters in length. Photograph copyright iStockphoto / Epitavi.
Median Costs of Field Camp Attendance at US-based Institutions
April 17 | American Geosciences Institute
April 17 | American Geosciences Institute
Where*s the Greatest Risk of a Mosquito Bite in Baltimore? A Surprising Answer
April 16 | National Science Foundation
April 16 | National Science Foundation
Sand Grains From Around the World and Beyond
April 16 | Geology.com
Sand Grains on the Surface of Mars: The ancient environment of Mars had streams, shorelines, alluvial fans and other sedimentary environments where sand grains were deposited. Today, many areas on Mars are covered with sand dunes and other aeolian features. The planet also has lots of sandstone exposed in the walls of its many impact craters. The largest grain at the top of this image is about 2 millimeters in diameter. Photo by NASA*s Mars Curiosity Rover.
April 16 | Geology.com
Sand Grains on the Surface of Mars: The ancient environment of Mars had streams, shorelines, alluvial fans and other sedimentary environments where sand grains were deposited. Today, many areas on Mars are covered with sand dunes and other aeolian features. The planet also has lots of sandstone exposed in the walls of its many impact craters. The largest grain at the top of this image is about 2 millimeters in diameter. Photo by NASA*s Mars Curiosity Rover.
*Habitable Worlds* - ASU Online Science Course Brings to Life a New Way of Teaching
April 16 | Arizona State University
April 16 | Arizona State University
What is Bauxite?
April 16 | Geology.com
Bauxite From Demerara, Guyana: Some specimens of bauxite do not have the pisolitic structures. Specimen is approximately 4 inches (10 centimeters) across.
April 16 | Geology.com
Bauxite From Demerara, Guyana: Some specimens of bauxite do not have the pisolitic structures. Specimen is approximately 4 inches (10 centimeters) across.
Lucara Recovers a 472-Carat Light Brown Diamond at Karowe
April 14 | Mining.com
Image by Lucara Diamond.
April 14 | Mining.com
Image by Lucara Diamond.
All About Brown Diamonds
April 14 | Geology.com
Beautiful Brown Diamonds: Three cognac-colored diamonds from Rio Tinto*s Argyle mine in Western Australia clearly demonstrate the beauty of brown diamonds. Image Copyright 2016 Rio Tinto.
April 14 | Geology.com
Beautiful Brown Diamonds: Three cognac-colored diamonds from Rio Tinto*s Argyle mine in Western Australia clearly demonstrate the beauty of brown diamonds. Image Copyright 2016 Rio Tinto.
Mississippi River Diversions Will Produce New Land, But More Slowly than Shoreline Is Lost
April 13 | National Science Foundation
April 13 | National Science Foundation
Uses of Copper
April 13 | Geology.com
Uses of Copper: This graph shows how copper was used in the United States during 2017 by industry sector. As an example: copper used in building construction could have been used for wiring, plumbing, weatherproofing and many other individual types of use. Data for this chart is from the United States Geological Survey Mineral Commodity Summary for 2018.
April 13 | Geology.com
Uses of Copper: This graph shows how copper was used in the United States during 2017 by industry sector. As an example: copper used in building construction could have been used for wiring, plumbing, weatherproofing and many other individual types of use. Data for this chart is from the United States Geological Survey Mineral Commodity Summary for 2018.
The Many Uses of Silver
April 13 | Geology.com
Silver Past in Electronics:Printed electronics like RFID tags rely on silver paste. Image copyright iStockphoto / JacobH.
April 13 | Geology.com
Silver Past in Electronics:Printed electronics like RFID tags rely on silver paste. Image copyright iStockphoto / JacobH.
New Gold Mine in Ivory Coast Declares Commercial Production
April 13 | Mining.com
April 13 | Mining.com
Where Is Ivory Coast?
Are Pipeline Land *Takings* in the Public Interest if the Oil and Gas Are Headed Overseas?
April 12 | Houston Chronicle
April 12 | Houston Chronicle
United States Diamond Mines
April 12 | Geology.com
United States Diamonds: A photograph of several diamonds found at the Crater of Diamonds State Park, near Murfreesboro, Arkansas. These diamonds were probably nicely formed crystals when they were in the Earth's mantle. Their shapes were modified by corrosive fluids during their rapid ascent to Earth's surface. Photo used with permission of Crater of Diamonds State Park.
April 12 | Geology.com
United States Diamonds: A photograph of several diamonds found at the Crater of Diamonds State Park, near Murfreesboro, Arkansas. These diamonds were probably nicely formed crystals when they were in the Earth's mantle. Their shapes were modified by corrosive fluids during their rapid ascent to Earth's surface. Photo used with permission of Crater of Diamonds State Park.
U.S. Gulf of Mexico Crude Oil Production to Continue at Record Highs Through 2019
April 11 | Energy Information Administration
April 11 | Energy Information Administration
Map of Earthquakes in Oklahoma During 2017
April 11 | Oklahoma Office Of The Secretary Of Energy & Environment
April 11 | Oklahoma Office Of The Secretary Of Energy & Environment
Canadian Government May Invest in Controversial Pipeline Where Investor Interest is Failing
April 11 | Associated Press
April 11 | Associated Press
Scientists Drill Ice Cores from Mt. Hunter in Denali National Park
April 11 | American Geophysical Union on YouTube
April 11 | American Geophysical Union on YouTube
Will Loss of Arctic Sea Ice Cause More *Snow on Ice* in Greenland?
April 11 | Lamont-Doherty Earth Observatory
April 11 | Lamont-Doherty Earth Observatory
By Some Measures, U.S. Natural Gas Production Set a Record in 2017
April 10 | Energy Information Administration
April 10 | Energy Information Administration
Which Countries Produce the Most Gem Diamonds?
April 10 | Geology.com
World Diamond Production: Estimated production levels for countries mining at least one million carats of gem-quality diamonds in 2016. Graph by Geology.com. Data from USGS Mineral Commodity Summaries.
April 10 | Geology.com
World Diamond Production: Estimated production levels for countries mining at least one million carats of gem-quality diamonds in 2016. Graph by Geology.com. Data from USGS Mineral Commodity Summaries.
Palm Trees Are Spreading Northward: How Far Will They Go?
April 10 | Lamont-Doherty Earth Observatory
April 10 | Lamont-Doherty Earth Observatory
Five Weird Archives That Scientists Use to Study Past Climates
April 10 | EOS Earth & Space Science News
April 10 | EOS Earth & Space Science News
U.S. Oil Production Growth Projected to be Led by Light, Sweet Crude Oil
April 9 | Energy Information Administration
April 9 | Energy Information Administration
Tales of the Doomed Franklin Expedition Long Ignored the Inuit Side, But *The Terror* Flips the Script
April 9 | Smithsonian.com
April 9 | Smithsonian.com
North Atlantic Is Getting Less Salty, but It*s Too Soon to Blame Climate Change
April 9 | Lamont-Doherty Earth Observatory
April 9 | Lamont-Doherty Earth Observatory
Two of the More Interesting Landslides from the Papua New Guinea Earthquake
April 8 | The Landslide Blog
April 8 | The Landslide Blog
Where Is Papua New Guinea?
Landslides Triggered by the 14 November 2016 M7.8 Kaikoura Earthquake, New Zealand
April 8 | The Landslide Blog
April 8 | The Landslide Blog
How Big Was That Eruption? Volcanic Explosivity Index
April 8 | Geology.com
Volcanic Explosivity Index: The spheres in the illustration above represent the volume of erupted tephra for some of the most widely-known explosive volcanic eruptions. Although most people believe that Vesuvius (79 AD - the Pompeii eruption), Mount St. Helens (1980), and Mount Pinatubo (1991) were enormous, they are very small compared to ancient eruptions such as Wah Wah Springs, Toba, Yellowstone, or Long Valley Caldera.
April 8 | Geology.com
Volcanic Explosivity Index: The spheres in the illustration above represent the volume of erupted tephra for some of the most widely-known explosive volcanic eruptions. Although most people believe that Vesuvius (79 AD - the Pompeii eruption), Mount St. Helens (1980), and Mount Pinatubo (1991) were enormous, they are very small compared to ancient eruptions such as Wah Wah Springs, Toba, Yellowstone, or Long Valley Caldera.
About 7% of Fossil Fuels Are Consumed for Non-Combusion Use in the United States
April 6 | Energy Information Administration
April 6 | Energy Information Administration
Largest Earthquake in Several Years Shakes Southern California, Causing Landslides on Santa Cruz Island
April 6 | Los Angeles Times
April 6 | Los Angeles Times
Santa Cruz Mountains Earthquake - 6.9 - October 17, 1989
April 6 | Geology.com
Santa Cruz Mountains Earthquake, 1989:This major earthquake caused 63 deaths, 3,757 injuries, and an estimated $6 billion in property damage. It is one of the largest earthquakes recorded on the San Andreas fault.
April 6 | Geology.com
Santa Cruz Mountains Earthquake, 1989:This major earthquake caused 63 deaths, 3,757 injuries, and an estimated $6 billion in property damage. It is one of the largest earthquakes recorded on the San Andreas fault.
*When You See Mountains, Think Earthquakes in California*, Seismologist Says
April 6 | Los Angeles Times
April 6 | Los Angeles Times
How Are Hurricanes Named?
April 6 | Geology.com
Hurricane Fran: Satellite image of a hurricane named *Fran*. Hurricane Fran was a large, powerful, destructive hurricane that made landfall near Cape Fear, North Carolina on September 5, 1996. Fran was the sixth named storm of the 1996 hurricane season. It was so destructive that the name *Fran* was retired from use. Satellite image by NASA.
April 6 | Geology.com
Hurricane Fran: Satellite image of a hurricane named *Fran*. Hurricane Fran was a large, powerful, destructive hurricane that made landfall near Cape Fear, North Carolina on September 5, 1996. Fran was the sixth named storm of the 1996 hurricane season. It was so destructive that the name *Fran* was retired from use. Satellite image by NASA.
