One of my favorite things is taking photos of geologic features. In 12 years of doing that and putting them online here, I've learned a few tricks and tips. This photo illustrates one of the best: get there during the morning or evening "golden hour" for the best light. Most of the other tips in this presentation are about coping when you can't do that. Fort Rock, Oregon — ...

This is another in my geologic abstract series featuring warm earth tones and metallic accents. I'm sorry the photo does not show the light reflecting off the 5 metal foil squares in the piece. If you're actually viewing the painting from various angles, the light bounces off as you move around. There are also passages having a soft metallic sheen that are also lost in photography. I ...

Some geologic faults that appear strong and stable, slip and slide like weak faults. Now an international team of researchers has laboratory evidence showing why some faults that "should not" slip are weaker than previously thought. "Low-angle normal faults -- faults that dip less than 45 degrees -- are a problem," said Chris Marone, professor of geosciences, Penn State. ...

Geologists and geomorphologists describe the Earth's geologic history through a temporal system known as the geologic time scale (Table 1). On this scale, time is measured using ... , eras, periods and epochs. All of these temporal subdivisions are established on the occurrence of some important geologic event. For example, Hadean Eon represents the time on Earth when life did not exist. During ...

... algae in Phanerozoic mass extinctions based on evidence from the geologic record and modern environments James W. Castle1 ... , we propose that toxin-producing algae were present in the geologic past and were an important factor in Phanerozoic mass extinctions. The geologic record demonstrates a pronounced increase in abundance and environmental range of algae, including stromatolitic cyanobacterial ...

Arizona State Parks Science & Research Manager Bob Casavant offered a new structural model for the origin of the faults that control the origin of Kartchner Caverns in southern Arizona, that is going to be controversial. Bob proposes a Laramide episode of transpressional faulting, with the block of Paleozoic sediments hosting Kartchner caught between fault strands. Basin and Range normal ...

There has historically been much more CO2 in our atmosphere than exists today. For example, during the Jurassic Period (200 mya), average CO2 concentrations were about 1800 ppm or about 4.7 times higher than today. The highest concentrations of CO2 during all of the Paleozoic Era occurred during the Cambrian Period, nearly 7000 ppm -- about 18 times higher than today. WRH permalink

In my last post I showed you a geologic compass in the Freiberg version. Below is a link on how to use a geological compass in the field. The compass used in the video is a Breithaupt model but usage is basicly identical. The only difference is the location of the dip scale which is not located on the sides of the joint but on the inside above the compass circle, as you will see in the video. ...

According to four studies appearing in the latest issue of the Journal of Volcanology and Geothermal Research, the plumbing that feeds the Yellowstone supervolcano shows a plume of molten rock rising at an angle from the northwest at a depth of at least 410 miles, contradicting claims that there is only shallow hot rock moving like slowly boiling soup. The research also indicates that the banana ...

... and Windy Jaeger.  This paper discusses the results of a geologic mapping project based on the 25ISTERM__01 mosaic of the ... by the USGS.  Geomorphologic maps are a type of geologic maps where different surface units are identified and mapped so that ... those found in other regional mosaics of the satellite.  The geologic history of these regions based on their mapping supports earlier ...

... premiere geologic landscape and a "geologic wonder". Grand Canyon contains many important geologic resources, including a vast fossil record ranging from Precambrian stromatolites to Ice Age mammal bones and dung found in caves; a potentially active volcanic field in the western Grand Canyon; a geologic history ranging more than 1.7 billion years; and the canyon landscape itself as the ...

... removed from a power plant into deep underground geologic formations for permanent storage. This technology is called ... Schlumberger, a GE alliance partner, has been working in geologic subsurface evaluation for more than 80 years. You may ask, if cleaner ... legislation to lay the framework for the comprehensive regulation of geologic sequestration. For CCS to be deployed commercially, workable ...

... Bang theory. In the sixth chapter we give information about the Geologic Column, the foundation of all evolutionary teaching. In chapter seven ... creationists’ alternative theory to explain the geologic features of the earth within a six thousand year framework. ... a lawyer, not a scientist. He developed what is called the, “geologic column.” This column is still taught in every earth ...

... middot; Address the following in your PowerPoint®: o Describe the various geologic events that have occurred in your region. o Describe the ... the mineral composition of the rock type. o How old is your geologic feature? Estimate the absolute age of the geological feature ... and discuss a methods used to determine the age. o What geologic event created your chosen geological feature? ...

... . (Though both times were this week, hm.) And while flipping channels, what should come on, but the most improbable program ever: Geologic Journey. I can't believe any non-Sqwook person out there was at all interested in a program called Geologic Journey. So I learned about the remnants of the ancient Grenville mountains off of Lake Huron & Georgian Bay in the ...