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Strobist:
Crosslit by Vivitar 285HV and Bower SFD728C. The Bower was camera right and behind the chess set. The Vivitar was camera left. Both flashes were at the same height as the chess board so the pieces would be lit while the board stayed dark.
The other side of Magasang Rock Formation, facing the setting sun. A cast of golden lights to the textures of the rocks and swirling pool of ocean waters.
These rock formations just added such interest to this area!! I don't remember them being here, but it was so long ago that I don't really remember. Flathead River runs along the trees out there...I just love it out here!! Have a nice evening all!! The weather is super windy...makes it miserable to do anything outside!! :)
Lummi Formation (upper Jurassic - lower Cretaceous)
Lummi Island
see from nwgeology.wordpress.com/the-fieldtrips/iceberg-point-lope... Dave Tucker:
"Look for swarms of more or less parallel white quartz veins. These generally crosscut the shear fractures at various angles. Quartz veins like these grow in fractures that develop as rocks are pulled apart. Since the veins cut the shear fractures, they indicate that after the rocks were compressed and sheared, the crust was ‘extended’ to the NW-SE (using current directions; it isn’t known what directions the actual extension occurred) while these rocks were still far below the surface. There is considerable debate among structural geologists who struggle to interpret the complex tectonic history preserved in San Juan rock units, and I won’t go into it all here. You’ll probably enjoy the scenery far more than that long and certainly confusing discussion! See the reference below for an overview of the subject."
see his photos nwgeology.files.wordpress.com/2013/10/13849-veins-mark.jpg
www.flickr.com/photos/rwolf/8737450066/
on "tension gashes" - blogs.agu.org/mountainbeltway/2016/09/08/tension-gashes-m...
my lichen photos by genus - www.flickr.com/photos/29750062@N06/collections/7215762439...
my photos arranged by subject, e.g. mountains - www.flickr.com/photos/29750062@N06/collections
In the publication: Cressler, C.W., 1970, Geology and ground water resources of Floyd and Polk Counties, Georgia, Georgia, Georgia Geological Survey Information Circular 39, 95 p.
Cressler mapped the geologic unit along Silver Creek in the vicinity of Silver Creek Cave as Cambrian age Conasauga Formation. All the published descriptions for the Conasauga Formation do not include massive chert so I was confused. I called my father and discussed the problem. He said massive chert is very rare in the Conasauga Formation in the southern Valley and Ridge Providence of Georgia. This was confirmed by geologist Tom Crawford, personal communication.
Magnetite BIF in the Precambrian of Minnesota, USA.
The Soudan Iron-Formation is a Neoarchean-aged banded iron formation (BIF) unit in the Vermilion Greenstone Belt of northeastern Minnesota, USA. Stratigraphically, the Soudan is considered to be the middle member of the Ely Greenstone. Metamorphosed pillow basalt successions occur above and below the iron-rich interval:
- upper member of the Ely Greenstone
- Soudan Iron-Formation member
- lower member of the Ely Greenstone
Radiometric dating of Ely Greenstone rocks (see Jahn & Murthy, 1975 and Jirsa et al., 2010) indicates that the Soudan Iron-Formation is about 2.722 billion years old.
The Soudan Iron-Formation was deposited in a deep-water environment and is closely associated with several types of volcanic rocks formed in an ancient island arc setting. As such, the unit is classified as an Algoma-type iron-formation. Superior-type iron-formations were deposited in relatively shallow water, continental shelf settings.
The Soudan Iron-Formation is exposed in & around the town of Soudan, Minnesota at roadcuts, glacially-eroded outcrop knobs, surface mines, and underground mines.
Observed iron-rich lithologies in the Soudan Iron-Formation include specularite, jaspilite BIF, and magnetite BIF.
The outcrop shown above is magnetite BIF, characterized by alternating layers of blackish magnetite (Fe3O4) and silvery-gray specular hematite (Fe2O3).
Stratigraphy: Soudan Iron-Formation member, Ely Greenstone, Vermilion Greenstone Belt, Neoarchean, ~2.722 Ga
Locality: roadcut on the northern side of Rt. 169, just west of milepost 270, between the towns of Soudan and Robinson, north of Fourmile Lake & southeast of Lake Vermilion's Armstrong Bay, northeastern Minnesota, USA (47° 50' 32.14" North, 92° 09' 19.59" West)
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References cited:
Jahn & Murthy (1975) - Rb-Sr ages of the Archean rocks from the Vermilion District, northeastern Minnesota. Geochimica et Cosmochimica Acta 39: 1679-1689.
Jirsa et al. (2010) - Geologic map of Minnesota, Precambrian bedrock geology, description of map units. Minnesota Geological Survey State Map Series S-22.
Taken on a snowy hike to the lower Mohawk Lake via Spruce Creek in Summit County, Colorado. The snow was too deep for me to continue to the upper Mohawk Lake -- save it for the summer.
Historic Jet Formation mit De Havilland Vampire, Fouga CM.170 Magister,
Saab 29 Tunnan, Saab 35 Draken, Saab 105OE, Northrop F-5E Tiger II und Euro ghter Typhoon
In my backyard one day, late morning into the afternoon I looked up and saw these beautiful clouds in the sky with the sun shining through. I thought WOW, this is gorgeous and started shooting. These are the images I was fortunate to obtain! Photo images credited to Vickie L Klinkhammer of Vickielynne Photography and Designs (VLP&Designs). Photo images may be designed on wearableart and/or home essentials @vlpdesigns.com