Concentric layering in iron-bearing ooids is thought to result from constant agitation of ooids associated with currents and expulsion of gas from the sediment 2. Iron-bearing goethitic (limonitic) ooids are probably formed out of volcanic pyroclastic (volcanic ash) material deposited in sea. Especially phosphatic and iron-bearing ooids composed of hematite and goethite seem to have been formed as such. Such ooids are formed by replacement of original calcium carbonate, but they may be also primary. Some ooids are made of silica ( chert), dolomite or fine-grained phosphatic material (collophane). Sometimes ooids form even in human-constructed features such as drainage pipes and water treatment plants 4. Even ooids made of evaporite minerals gypsum and halite have been reported 1. Some ooids form in fresh-water lakes, caves, caliche soils, hot springs, and rivers. Some ooids form in non-marine environments, the Great Salt Lake is probably the best known example of ooid formation in saline lake. Most modern ooids are composed of mineral aragonite. However, the exact formation mechanisms are still unresolved 4. It is believed that ooid formation is generally abiogenic process. Warm water is needed to lower the carbon dioxide content in water (higher temperature reduces the ability of water to keep gases dissolved) and thereby enhance the precipitation of calcium carbonate. This is also the reason why ooids are so well-polished. Ooids are kept moving by waves which enables accretion to occur on all sides. Ooids in these places form a distinct type of sand - ooid sand. Most ooids are marine, forming in shallow (less than 10 m, preferably even less than 2 meters), warm, and wave-agitated water such as the Persian Gulf and the Bahama Platform.
Ooids may be spherical but some are elongated, depending on the shape of nucleus. Ooids usually possess a clearly developed growth banding. The terms “oolite” and “ooid” are derived from the Greek word for fish roe ( oon) which ooids resemble 4. Oolite forms when ooids like this get cemented together. Ooid sand from Antelope Island, The Great Salt Lake. Larger grains with similar genesis are pisoids (pisoliths). The term “ooid” is applied to grains less than 2 mm in diameter. Nucleus is usually either mineral grain or biogenic fragment. Ooids are spheroidal grains with a nucleus and mineral cortex accreted around it which increases in sphericity with distance from the nucleus. Most oolites are limestones - ooids are made of calcium carbonate (minerals aragonite or calcite). Up to 10 images, 10 pages of written material or 10 video links of recent workĦ.Oolite is a sedimentary rock made up of ooids (ooliths) that are cemented together. A brief description of your practice/research (max 150 words)ĥ. A short statement of intent addressing why you want to join Oolite Arts’ Studio Residency Program and what you hope to accomplish over the course of one year (max 500 words)ģ. Is seeking to engage in Miami’s artist community and take advantage of Miami’s cultural offerings.Ģ. Has the ability to commit to participating in exhibitions, public programming, studio visits, and our community outreach initiatives. Is able to commit to working in their studio 12-15 hours per week. Is in need of space and time to develop their practices and are committed to actively engage in Oolite Arts programming. Please apply only if you are a practicing artist who:
OOLITE MIAMI PROFESSIONAL
Opportunity to engage with local, national and international curators, artists, as well as participate in studio visits, exhibitions, public programs, and community outreach initiatives.Īccess to an expanded network of practitioners from a variety of disciplines and professional development workshops.Īt the completion of the program, access to Oolite Arts alumni opportunities Use of Oolite facilities including a flex lounge, Printshop, and large format inkjet printer Studio spaces between 175-600 square feet located on Miami Beach In addition to engaging with a community of artists, renowned curators, arts professionals, and institutional partners in Miami, Oolite Arts Residents are provided the space from which to develop their practice and are invited to actively participate in Oolite Arts’ programs such as exhibitions, public programming, studio visits, and our community outreach initiatives. Oolite Arts 2022 Studio Residency Program offers studio spaces at our Miami Beach location for exceptional visual artists working in a range of disciplines.
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