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Curved gouges, possibly left by faulting, in a rock outcrop in Milford, CT.
These marks are hard to see far away - zoom in and pan around to see them better... the direction changes from vertical near the bottom of the outcrop to more horizontal near the top. |
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Another view of the main part of the enclosed trackway at Dinosaur State Park, Rocky Hill, CT (http://www.dinosaurstatepark.org).
More lovely Eubrontes here - some of the closest areas still have mucky bits of rock that represent the mud layer that overlies the trackway - it's still adhering to the print below, hence the mucky appearance. |
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Close-up of slickensides ("chatter marks") along a fault in the Triassic New Haven formation, Simsbury, CT |
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Garnets weathering out of a boulder of gneiss (Tolland County, CT).
Tried to get nice morning light on the vein containing the reddish garnets - was hard with the trees, though... the leaves were almost as bad as the clouds! |
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Roadcut of Triassic aged New Haven formation - Simsbury, CT
Similar in location to Red Rock Outcrop (1), slightly different viewing angle. |
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First in a series of pans of exposures of the Talcott basalt (early Jurassic age, ~200 million years old) in Meriden, CT
Pillow basalts form when lava is erupted underneath water (typically oceans, but in this case a briny lake). The water quickly cools the outside of the lava, but the inside is still pushing outwards (like blowing up a balloon, almost). Each one of the round-ish structures here is one of these pillows. See also: http://www.gigapan.org/viewGigapan.php?id=18647 http://www.gigapan.org/viewGigapan.php?id=18539 http://www.gigapan.org/viewGigapan.php?id=18532 http://www.gigapan.org/viewGigapan.php?id=18522 http://www.gigapan.org/viewGigapan.php?id=18518 |
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Outcrop of the Higganum Dike along Rt. 9 near Higganum, CT.
This particular structure is a diabase dike intruding metamorphic rocks - this is part of the "feeder" system for some of the Mesozoic basalt flows in southern New England. We were here as part of a field trip with CCSU students in both the structural geology and field methods classes - they're here to examine the outcrop, possibly measure any joints or faults they find, and to record their observations for future assignments. (The vests make the students easier to spot for oncoming traffic... helps in the photo, too!) |
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Just for fun, a pan o' the old office (or new office, technically). I hadn't tried any indoor pans to this point, so decided to give it shot.
Pardon the lack of clutter, it's only my first year :) |
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Folded layers of the Hebron Gneiss, Gillette Castle State Park (CT).
Up section from the other pans of this rock unit (http://gigapan.org/viewGigapan.php?id=11212, http://gigapan.org/viewGigapan.php?id=11171), where the original rocks were a bit less competent - so the layers folded rather than shearing. More info on the geology of the park can be found at http://www.ct.gov/dep/cwp/view.asp?a=2716&q=325132&depNav_GID=1650 We were here as part of a CCSU geology field trip - the field methods students sketched the folds and recorded their observations, while the structural geology students stuck around to measure the axes of the folds to determine stress directions at a later date. |
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Cambrian-aged (~500 million years old) schist and gneiss exposed in a dome that underlies much of Waterbury, CT.
The outcrop here is behind a Wal-Mart in Naugatuck, CT (south of Waterbury). (Yes, we were legally parked - there are picnic tables near here!) |