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Members of marine chemistry professor Andrew Dickson's lab bottle seawater samples used in chemical analysis, June 28, 2013 Dickson has created the calibration standard for proper measurement of ocean CO2 levels. It is the basis of a protocol followed by marine chemistry labs around the world. Today Dickson’s lab prepares and bottles thousands of reference samples each year for distribution throughout the research community.
The huge samples room of the Nairobi coffee auctions.
Once a buyer won the auction for a coffee lot, he will collect a one-kilogram sample to this room and will have a few days to confirm he wants the full lot to be shipped.
2017 NOAA GLERL Lake Michigan Southern Basin Benthic Survey. Elutriated Benthic Sample. Photo Credit: Paul Glyshaw, CIGLR.
The Standard Assessment of Mitigation Potential and Livelihoods in Smallholder Systems (SAMPLES) Program aims to identify pro-poor mitigation options in smallholder farming systems, focusing on opportunities to both benefit farmers’ food security and contribute to climate change mitigation.
This photo was taken at the SAMPLES Annual Workshop June 25-28th, 2013 in Nyando District, western Kenya. Photo by K. Foster (ICRAF).
Sample textile design from 9-week "Exploring Surface Design" course at The Art League School in Alexandria, taught by Julie Booth.
Techniques: scrunched resist, hot glue on cardboard block print, reverse texture block print, bubble wrap print
Spring 2010
Ocean Spray Fruit Waves Hard Candy sample pack--late 1994 or early 1995
showing coupon, expires January 31, 1996
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The Standard Assessment of Mitigation Potential and Livelihoods in Smallholder Systems (SAMPLES) Program aims to identify pro-poor mitigation options in smallholder farming systems, focusing on opportunities to both benefit farmers’ food security and contribute to climate change mitigation.
This photo was taken at the SAMPLES Annual Workshop June 25-28th, 2013 in Nyando District, Kenya. Photo by K. Foster (ICRAF).
Sugar sampling at the discharge end of the sugar drier at Fairymead Sugar Mill, Bundaberg. Scanned from a publication (1969) by CSR Limited on behalf of the Australian Sugar Industry.
Soil samples are taken from key points on an excavation site. Bits of charred grain, snail shells etc. help environmental specialists build up a picture of the past landscape.
In this picture a sample is weighed before processing. This will give a measure of the number of snail shells per kilogramme of soil.
MWMO water quality monitoring team staff conducting sampling on the Mississippi River, Jan. 14, 2016.
A sample is shown in the foreground that can be used in the digital light sheet microscope at MU's Molecular Cytology Core as Anand Chandrasekhar explains how he uses it to study neuronal development in zebrafish. | photo by Roger Meissen, Bond LSC
The Standard Assessment of Mitigation Potential and Livelihoods in Smallholder Systems (SAMPLES) Program aims to identify pro-poor mitigation options in smallholder farming systems, focusing on opportunities to both benefit farmers’ food security and contribute to climate change mitigation.
This photo was taken at the SAMPLES Annual Workshop June 25-28th, 2013 in Nyando District, western Kenya. Photo by K. Foster (ICRAF).
A SOOC test to check some details here and there- comments are welcome but please only about the original size. View the exif data and enjoy 150cm2 of my kitchen. I want to post another sample of a daylight shot soon.
Apparently the siren is crisp, the chili label may have been too close even for f/8...
Quartzite from the Precambrian of the Transcontinental Arch, USA. (7.0 centimeters across at its widest)
Metamorphic rocks result from intense alteration of any previously existing rocks by heat and/or pressure and/or chemical change. This can happen as a result of regional metamorphism (large-scale tectonic events, such as continental collision or subduction), burial metamorphism (super-deep burial), contact metamorphism (by the heat & chemicals from nearby magma or lava), hydrothermal metamorphism (by superheated groundwater), shear metamorphism (in or near a fault zone), or shock metamorphism (by an impact event). Other categories include thermal metamorphism, kinetic metamorphism, and nuclear metamorphism. Many metamorphic rocks have a foliated texture, but some are crystalline or glassy.
Quartzite is a common, crystalline-textured, intermediate- to high-grade metamorphic rock. It forms by metamorphism of quartzose sandstones or siltstones. Quartzite can be entirely composed of interlocking quartz crystals, or the original sand grains may still be visible. This rock is hard (H = 7), will not bubble in acid (unlike marble), and can be almost any color.
The term “quartzite” has been used in geology to refer to crystalline, quartzose metamorphic rocks and to hard, well-cemented quartzose sandstones that have not been subjected to metamorphism. It is difficult to not call hard, well-cemented sandstones “quartzite” - for example, the Clinch Quartzite in the Appalachian Mountains and the Eureka Quartzite of the Great Basin in western USA, but the Clinch and Eureka aren’t metamorphic rocks. The term "metaquartzite" has been used by some geologists to refer to crystalline-textured, quartzose rocks that have been metamorphosed. This implies that “quartzite” be restricted to well-cemented, non-metamorphosed sandstones. I don’t often see the term metaquartzite in the geologic literature.
The quartzite sample seen here is from the Precambrian-aged Sioux Quartzite, which outcrops in southeastern South Dakota and southwestern Minnesota. Despite being regionally metamorphed, the unit’s original sedimentary features, such as horizontal stratification, cross-bedding, and ripple marks, are still apparent in some outcrops.
The Sioux Quartzite is a erosion-resistant unit in a long-lived paleotopographic high called the Sioux tectonic core. This high has existed since Precambrian times and is part of a northeast-southwest trending series of paleotopographic highs & depressions known as the Transcontinental Arch, which extends from Arizona to Minnesota (see Carlson, 1999).
Stratigraphy: Sioux Quartzite, upper Paleoproterozoic, 1.65 to 1.70 Ga
Locality: undetermined quarry; collected from railroad ballast at Missouri Valley, Iowa, USA
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Reference cited:
Carlson (1999) - Transcontinental Arch - a pattern formed by rejuvenation of local features across central North America. Tectonophysics 305: 225-233.