Posted in ART, BIRDS, CITIES, LAM ONLINE, PARKS, STREETS, tagged Avenida Houston, birds, Convention Center, diversity, Houston, HoustonFirst, Immigration, industry, Migration, Natalia Beard, nature, promenade, sculpture, Superbowl LI, SWA on January 31, 2017|
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BY ZACH MORTICE
Avenida Houston is a 60-foot-wide promenade in front of Houston’s convention center. Image courtesy of Jonnu Singleton/SWA.
Avenida Houston was designed to celebrate the flyway paths of migratory birds and the vibrant energy economy that has made Houston attractive to domestic and international migrants alike. But in early February a new set of visitors will be attracted to this linear plaza: Football fans drawn by the suite of Super Bowl programming unfurled at the nearby (and newly renovated) George R. Brown Convention Center, and Super Bowl LI, to be played a few miles away at NRG Stadium.
Avenida Houston, designed by SWA Group, is a four-acre, 60-foot-wide strip of space that turned a desolate and unforgiving stretch of multilane traffic in front of the city’s convention center into an informal promenade. Two central themes, seemingly opposed, animate this new public event space: Houston’s industry and nature. “The conversation really started as, (more…)
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Posted in ECOLOGY, ENVIRONMENT, LAM MAGAZINE, tagged A Sand County Almanac, Aldo Leopold, Cambrian Period, carcinogenic, energy, EPA, FDA, frac sand, Fracking, Frank Lloyd Wright, glass, industry, Karner Blue butterfly, knapweed, Laurentide Ice Sheet, mining, Philip Walsh, quartz, sand, Wisconsin, Wisconsin Department of Natural Resources, Wisconsin Industrial Sand Association, Wonewoc Formation on March 23, 2015|
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BY PHILIP WALSH
A new cash crop is shifting the contours of Wisconsin’s countryside.
Two saucers full of sand sit on my desk. One contains a heathery mix of grains that I scooped up from L Street Beach in South Boston. It’s a blend of dark, light, and medium stone, mostly quartz weathered from the granite mountains of New Hampshire. Viewed at a distance it’s just gray. The coastal sands of southern New England were originally washed down by glacial floodwaters when the Laurentide Ice Sheet began to retreat about 20,000 years ago. Sand is dynamic, particularly when acted upon by the ocean. And indeed, the effect of water on stone is the very genesis of sand. The action of millennia of waves and currents reshapes the grains themselves. This sand is “semiangular”: The grains are irregular and somewhat sharp edged, although the occasional near sphere of transparent quartz does crop up now and again, as I peer at it through a 10x loupe. It is very young sand.
The second dish of sand is quite another matter. It’s an even golden color, reminiscent of straw or lightly done toast. The grains are on the whole much finer than the beach sand, and even without magnification they have a remarkable consistency, almost a silky quality. Under the loupe the grains are almost all rounded, most nearly spherical. The saucer also holds several large lumps of aggregated sand, still damp when I collected them at a mine operated by Fairmount Santrol at Menomonie, Wisconsin. This is sandstone from the Wonewoc Formation, and the mine was originally prospected by a nearby glassmaking company. Some of the sand from this site still ends up as windows. When I gathered these lumps of sand at the quarry, still moist, the stone had the consistency of halvah and readily crumbled into a heap of the distinctive, fine golden grains. Now that the sample has dried it behaves more like the sandstone it is. The Wonewoc sandstone dates to the early Cambrian Period, about 500 million years ago. It was smoothed into its typical roundness and sorted into beds by the actions of shallow seas that lapped the shores of supercontinents that predate even Pangaea, the breakup of which continues to shape our globe. This sand is so old that the tides that refined it were governed by a shorter day and a year 400 days long. It is unthinkably ancient.
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