Field trip across the Taconic orogen


Looking at metamorphosed quartz pebble conglomerate in the Cheshire Quartzite, Pine Cobble Trail, Williamstown, MA.


Looking at metamorphosed quartz pebble conglomerate in the Cheshire Quartzite, Pine Cobble Trail, Williamstown, MA.


Walloomsac metamorphosed calcareous sandstone, Rt. 8, North Adams, MA.


Natural Bridge, in Natural Bridge State Park, North Adams, MA.


Hornblende needles in muscovite-biotite-chlorite-garnet schist.


More hornblende needles in muscovite-biotite-chlorite-garnet schist.


Metamorphosed tonalitic intrusives of the Taconian arc complex, Shelburne Falls, MA.


Metamorphosed tonalitic intrusives of the Taconian arc complex, Shelburne Falls, MA.


Woodchuck on Jurassic red bed sediments, Turners Falls, MA.


Looking at Clough Quartzite, Cragg Mountain trail, Northfield, MA.


Field trip to the eastern Adirondacks and the high peaks area


Big garnet outcrop, Warrensburg, NY.


Large hornblende crystals in a granitic pegmatite.


Looking for graphite in marble, Warrensburg, NY.


Early risers in Petrology, 2004.


Post-Grenville (Taconian??) chalcopyrite in quartz veins, associated with numerous small faults.


Graphite and a quartz lump in marble, Paradox Lake.


Large plagioclase megacryst in anorthosite, Mt. Jo.


Summit of Mt. Jo.


Summit of Mt. Jo.


Summit of Mt. Jo.


Largest plagioclase megacryst in anorthosite, Mt. Jo.


Eroded lamprophyre dike, near the summit of Mt. Jo.


Eroded lamprophyre dike, near the summit of Mt. Jo.


Eroded lamprophyre dike, near the summit of Mt. Jo.


Cracker-eating contest during lab


Contest question: Can 6 standard saltine crackers be eaten in one minute by one more-or-less normal person, with nothing to drink?


Start


10 seconds.


20 seconds.


40 seconds.


50 seconds.


60 seconds.


Answer: no.


Mt. Monadnock field trip, NH


Pre-hike lunch making. Nothing better than peanut butter and jelly!


Halfway house site, with andalump schist and pegmatite.


Black Precipice for lunch.


Late quartz vein with 25 cm wide tourmalinized zone around the vein.


Isoclinally folded quartzite beds.


Fold hinge in one of the isoclinally folded quartzite beds.


More isoclinally folded quartzite beds.


View to the southwest, overlooking Monta Rosa.


Graded quartzite bed, stratigraphic top to the upper right.


"Billings Fold" near the Monadnock summit.


Coticule layer near the Billings Fold.


View to the east from the summit. Boston was not visible today.


Part of the class.


View from the summit to the south, toward Bald Rock (left) and the halfway house site (right).


The whole hiking crew.


On the hike down we found another part of the Billings Fold, ~200 m along the axial surface.


Looking back from the location above to the Billings Fold itself.


Layer truncations against a thick quartzite. Possible pre-metamorphic sedimentary structures, or a fault surface.


Late fault offsetting quartzite layer.


Large tourmaline crystals in a quartz vein. Largest crystal is ~5 cm long.


Large sillimanite pseudomorph after andalusite, ~35 cm long.


Brian pops out of the boulder cave.


Patrick pops out of the boulder cave.


David pops out of the boulder cave.


Anna pops out of the boulder cave.


Salamander escapes from tent caterpillar.


Salamander rushes off at top speed.