Seasonal changes in organotin compounds in sediments from the Bahía Blanca Estuary     

Pamela Y. Quintas  Ana L. Oliva  Andrés Arias  Claudia E. Domini  Mónica B. Alvarez  Mariano Garrido  Jorge E. Marcovecchio 《Environmental Earth Sciences》2016,75(8):659

  相似文献   

Using Raman spectroscopy to improve our understanding of geological fluids     

Pamela Murphy 《岩石学报》2000,16(4)

Using Raman spectroscopy to improve our understanding of geological fluidsMurphy andRoberts.1995.Geochim.Cosmochim.Acta,59:4809～4824 Murphy andRoberts.1997.ChemicalGeology,135:1～20 Murphy,Stevens andL aGrange.2000.Geochim.Cosmochim.Acta,64:479～494 Sam son andWalker.2000.CanadianMineralogist,38:35～43…  相似文献   

Preliminary study on the preservation of giant clam (Tridacnidae) shells from the Balobok Rockshelter archaeological site,south Philippines     

Marie Grace Pamela G. Faylona  Claire E. Lazareth  Anne‐Marie Smah  Sandrine Caquineau  Hugues Boucher  Wilfredo P. Ronquillo 《Geoarchaeology》2011,26(6):888-901

Tridacnidae shells, a valuable archive of past environments, are common in the Balobok Rockshelter archaeological site on Sanga‐Sanga Island in the south Philippines. This site was occupied during the mid‐Holocene (ca. 5000–8800 ¹⁴C yr B.P.), a period of Neolithic cultural expansion in the Philippines. This paper focuses on the preservation of two shell specimens, Hippopus hippopus and Tridacna maxima, unearthed from two mid‐Holocene layers within the rockshelter. The shells' mineralogy and microstructure (prismatic and crossed‐lamellar) were studied using micro‐Fourier transform infrared spectroscopy and scanning electron microscopy to determine if the samples were suitable as paleoenvironmental records. Both shells are still aragonitic but aragonite crystals of both microstructure types are partly dissolved. This dissolution, characteristic of meteoric water alteration, precludes their utility in paleoenvironmental geochemical studies. Nevertheless, these shells are abundant in archaeological sites in the region and may be better preserved in other depositional contexts; more studies on Philippine Tridacnidae shell diagenesis are needed. © 2011 Wiley Periodicals, Inc.  相似文献