Scientists in South Africa have been stunned to discover that termite mounds that are still inhabited in an arid region of the country are more than 30,000 years old, meaning they are the oldest known active termite hills. https://lnkd.in/en4gbYkn
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Using a model of the Saguenay region in Quebec, researchers with Université du Québec à Chicoutimi developed of a methodology to forecast slope failure and zonation of landslides in sensitive clays. https://lnkd.in/gNNFr96E #geologicalmodel #landslidehazard #groundwatermodel
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With the occasion of the 𝗪𝗼𝗿𝗹𝗱 𝗦𝗲𝗮𝗴𝗿𝗮𝘀𝘀 𝗗𝗮𝘆 today, March 1st, we are sharing this work on coastal shell middens from the California Channel Islands: 𝑈𝑠𝑖𝑛𝑔 𝑛𝑜𝑛-𝑑𝑖𝑒𝑡𝑎𝑟𝑦 𝑔𝑎𝑠𝑡𝑟𝑜𝑝𝑜𝑑𝑠 𝑖𝑛 𝑐𝑜𝑎𝑠𝑡𝑎𝑙 𝑠ℎ𝑒𝑙𝑙 𝑚𝑖𝑑𝑑𝑒𝑛𝑠 𝑡𝑜 𝑖𝑛𝑓𝑒𝑟 𝑘𝑒𝑙𝑝 𝑎𝑛𝑑 𝑠𝑒𝑎𝑔𝑟𝑎𝑠𝑠 ℎ𝑎𝑟𝑣𝑒𝑠𝑡𝑖𝑛𝑔 𝑎𝑛𝑑 𝑝𝑎𝑙𝑒𝑜𝑒𝑛𝑣𝑖𝑟𝑜𝑛𝑚𝑒𝑛𝑡𝑎𝑙 𝑐𝑜𝑛𝑑𝑖𝑡𝑖𝑜𝑛𝑠 By A.F. Ainis, R.L. Vellanoweth, Q.G. Lapeña, C.S. Thornber, Journal of Archaeological Science (September 2014) 𝗛𝗶𝗴𝗵𝗹𝗶𝗴𝗵𝘁𝘀 • Identified 18 species of small gastropods that infer seaweed and seagrass harvesting • Dividing ancillary shells into four types based on habitat and substratum. • Frequencies of non-dietary shells support shifts in local kelp biomass between the Early and Middle Holocene. • Frequencies of small gastropod assemblages reveal similar distributions of shell types between two sites. • Ancillary shells in archaeological assemblages can inform on harvesting practices and paleoenvironment. DOI: https://lnkd.in/eptQ2Msz Photo of the Channel Islands of California by Danielle Guyder on Unsplash
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In 1901, a serendipitous event in the Jura region of France sparked a revolution in hydrogeology. When lightning struck the Pernod distillery in Pontarlier, causing an absinthe spill into the Doubs River, it unexpectedly revealed a connection to the source of the Loue River. This accidental discovery kickstarted a series of groundbreaking studies in karst hydrogeology. 1. E.-A. Martel's 1901 campaigns led to the first law establishing protection perimeters for drinking water sources. 2. Local hydrogeological studies began in 1902, utilizing tracing methods to identify source catchment areas. 3. In 1901, F. Marboutin demonstrated the link between Loire River losses in the Val d'Orléans and the Loiret spring, confirming Pierre Perrault's 17th-century hypothesis. 4. E. Fournier conducted extensive tracings in the Jura from 1902, following the Doubs-Loue connection discovery. This period marked the dawn of modern karst hydrogeology, showcasing how industrial accidents and scientific curiosity can lead to significant advancements in our understanding of complex water systems. #KarstHydrogeology #JuraMountains #WaterScience #EnvironmentalHistory #Geology #Besançon Sources [1] The Aubonne karst aquifer (Swiss Jura) https://lnkd.in/g3fJmjeZ [2] An introduction to France's Jura region - The Washington Post https://lnkd.in/gPG-fgmH [3] (PDF) Hydrogeological behaviour of a large karstic basin in the Jura ... https://lnkd.in/gMHh6P54 [4] Preface: Five decades of advances in karst hydrogeology - PMC https://lnkd.in/gnMsgzUS [5] Hydro-geophysical monitoring of groundwater reservoirs in the Jura https://lnkd.in/gs7Jt4ed [6] https://lnkd.in/gKnm8sPd
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The island of Lazzaretto Nuovo is situated at the entrance of the lagoon approximately three kilometres northeast of Venice, across from the shore of S. Erasmo. The island became a quarantine post for ships arriving from various ports of the Mediterranean, suspected of carrying the plague. In 1468 by decree of the Senate of the Serenissima a lazaretto (quarantine) was established to contain the contagion, it was called “Novo” to distinguish it from the existing one located near the Lido where plague-infected cases were admitted. Many buildings were constructed to improve the efficiency of the new lazaretto. Large sheds (teze) were built in the interior for quarantine and decontamination of the goods: mostly fumes of aromatic herbs like juniper and rosemary leaves were used. The island's cemetery, known as Camposanto, was excavated between 2015 and 2024 with the primary purpose of understanding the burial practices on the island and the demographic profile of the population buried therein. Two stratigraphic units were encountered comprising a secondary deposit of disarticulated and commingled bone fragments and a collective deposition of articulated albeit often truncated burials. These burials represent the physical remains of people who died and were buried on the island, presumably during periods of plague. The fragmented layer is the subject of Ambika Flavel's PhD research, the remaining material is being studied as part of the Camposanto Bioarchaelogy Project and is the subject of a second PhD research project.
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#Shear ? #structuralgeology #Landsat one of the more interesting areas in southern Kenya, mapped as a litho-stratigraphic boundary. Known #ironore ,#magnetite deposits in the area!
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📌 Publication Alert❗ ◾️IPSD will be the pioneering software to display the holistic account of seeds described from the Permian age of Indian Lower Gondwana accrued over the past 140 years. ◾️The database provides details of seeds (morphology, reference, authors, etc.) that will help identify seeds for researchers globally. It will be helpful for comparing the Indian Permian seeds with other Gondwana continents. https://lnkd.in/gy5v9d9e
IPSD: e-repository of Permian seeds from Indian Lower Gondwana
acpa.botany.pl
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Graduate Oil Field Engineer | Geologist | Data Science Enthusiast | Seeking opportunities in Geology, Reservoir Engineering in the oil industry.
2-𝐂𝐚𝐫𝐛𝐨𝐧𝐚𝐭𝐞 𝐬𝐞𝐝𝐢𝐦𝐞𝐧𝐭𝐚𝐫𝐲 Limestone is a widely distributed rock that forms mountain peaks, karst landscapes, and gorges globally. Limestones, which are, by definition, rocks composed mainly of calcium carbonate, their strata are common through much of the stratigraphic record and include some very characteristic rock units. Limestone, primarily composed of calcium carbonate, is prevalent in sedimentary environments, with many originating in shallow marine settings where organisms contribute to sediment formation. The 𝘋𝘶𝘯𝘩𝘢𝘮 𝘊𝘭𝘢𝘴𝘴𝘪𝘧𝘪𝘤𝘢𝘵𝘪𝘰𝘯 is a widely used system for describing limestone based on texture in the field, hand specimen, and thin-section. The primary criterion is texture, considering the proportion of carbonate mud and the rock's framework. It distinguishes matrix-supported limestone (carbonate mudstone and wackestone) from clast-supported limestone (packstone and grainstone). Boundstone has an organic framework like a coral colony. Subcategories (bafflestone, bindstone, framestone) were later added to describe the type of organisms in the framework. Along with the addition of rudstone (which are clast supported limestone conglomerate) and floatstone (matrix-supported limestone conglomerate). The secondary part of the classification considers the nature of grains or framework material, offering insights into sediment formation conditions. The combination of textural and compositional criteria in the Dunham scheme provides information about the environment in which the sediment formed. #sedimentology #geology #petroleum #SedimentaryRocks #Geoscience #Paleoenvironments
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On the occasion of 𝗪𝗼𝗿𝗹𝗱 𝗪𝗲𝘁𝗹𝗮𝗻𝗱𝘀 𝗗𝗮𝘆, today we are sharing this recent work on wetlands in northwestern Colombia: 𝘈𝘯𝘤𝘪𝘦𝘯𝘵 𝘸𝘢𝘵𝘦𝘳 𝘮𝘢𝘯𝘢𝘨𝘦𝘮𝘦𝘯𝘵 𝘢𝘯𝘥 𝘵𝘩𝘦 𝘦𝘷𝘰𝘭𝘶𝘵𝘪𝘰𝘯 𝘰𝘧 𝘵𝘩𝘦 𝘭𝘢𝘵𝘦 𝘏𝘰𝘭𝘰𝘤𝘦𝘯𝘦 𝘸𝘦𝘵𝘭𝘢𝘯𝘥𝘴. 𝘍𝘪𝘳𝘴𝘵 𝘱𝘢𝘭𝘦𝘰𝘦𝘤𝘰𝘭𝘰𝘨𝘪𝘤𝘢𝘭 𝘦𝘷𝘪𝘥𝘦𝘯𝘤𝘦 𝘧𝘳𝘰𝘮 𝘱𝘳𝘦𝘩𝘪𝘴𝘱𝘢𝘯𝘪𝘤 𝘳𝘢𝘪𝘴𝘦𝘥 𝘧𝘪𝘦𝘭𝘥𝘴 𝘰𝘧 𝘜𝘳𝘢𝘣𝘢́, 𝘯𝘰𝘳𝘵𝘩𝘸𝘦𝘴𝘵𝘦𝘳𝘯 𝘚𝘰𝘶𝘵𝘩 𝘈𝘮𝘦𝘳𝘪𝘤𝘢 By William A. Posada-Restrepo et al., Journal of Archaeological Science: Reports (October 2023) Abstract The raised fields discovered recently in the Gulf of Urabá, northwestern Colombia, extends more than 135,000 ha among the floodplains of the rivers León, Suriquí, and Tumaradocito in the Chocó biogeographic region. To understand the mechanisms by which people use the wetlands under climate change of the Late Holocene, the paleoenvironmental and cultural conditions were studied using artifacts, soil micromorphology, geochemical, chronostratigraphic and palynological analysis at El Vergel archaeological site. This study aims to discuss the origin of raised fields development in the León River floodplain and its relationship with progressive drought, groundwater, and wetland management for permanent human occupation. The results suggest that the raised fields were built around the IX century CE, during a period marked by decreased precipitation, probably related to the Medieval Warm Period. The hydrogeology reveals a multilayer aquifer in the region with some shallow springs in the floodplain where earthworks are located. The poor stratigraphic demarcation of the ridges and well-dug channels, with no evidence for agriculture whatsoever, support the idea that some raised fields were strategic for distributing groundwater and rainwater over a large area and thus preserving the productivity of the wetland for fishing and hunting. Get the full text here: https://lnkd.in/eGEDxMpG
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