Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Yaacov Nathan"'
Publikováno v:
Sedimentology. 60:800-819
Research on the Upper Campanian (Upper Cretaceous) Negev phosphorites (Mishash Formation), based on microprobe analyses, Fourier Transform Infrared spectroscopy, wet chemistry, microtextural (Scanning Electron Microscopy) studies and mineralogical an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcc679ddeeaa9cfb52456e1a4cf0f9de
https://doi.org/10.1111/j.1365-3091.2012.01361.x
https://doi.org/10.1111/j.1365-3091.2012.01361.x
Publikováno v:
Israel Journal of Earth Sciences. 54:229-236
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::808549de78f01c82585d4d7e9fca4057
https://doi.org/10.1560/yr0n-5260-757t-03v7
https://doi.org/10.1560/yr0n-5260-757t-03v7
Publikováno v:
Chemical Geology. 189:213-230
Study of the U(IV) fraction in Mishash phosphorites of the Negev reveals an apparently paradoxical trend. The U(IV) fraction is very low (less than 10%) in the pristine, organic-rich laminated phosphorites while this proportion considerably increases
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01208df29cec1d7775bf4d244d9fc22c
https://doi.org/10.1016/s0009-2541(02)00144-4
https://doi.org/10.1016/s0009-2541(02)00144-4
Autor:
David Soudry, Yaacov Nathan
Publikováno v:
Sedimentology. 48:723-743
An electron probe and chemical study of bulk phosphorite samples and separated constituents from various Negev deposits was carried out together with XRD, FTIR spectroscopy and textural analysis. The results allow a better understanding of the distri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab02f5c37f2aff5f26e03d5c3a8e667f
https://doi.org/10.1046/j.1365-3091.2001.00392.x
https://doi.org/10.1046/j.1365-3091.2001.00392.x
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 109:51-54
Carbonate removal in the apatite structure was observed at temperatures from 600 to 900°C. The carbonate ions are also partially relocated from the orthophosphate site, into others such as interstitial positions and OH site. Hydroxyl groups form hyd
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::461db4e7597b9e2e894fd57ceff56b24
https://doi.org/10.1080/10426509608545088
https://doi.org/10.1080/10426509608545088
Publikováno v:
Marine Geology. 129:111-128
Rare earth elements (REE) and major elements have been determined in twenty-nine phosphorite and associated sediment samples from the southwestern coast of Africa, including thirteen samples of unconsolidated sediment collected during recent cruises
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a356fec69d64941771b531591f008e5b
https://doi.org/10.1016/0025-3227(95)00107-7
https://doi.org/10.1016/0025-3227(95)00107-7
Publikováno v:
Geomicrobiology Journal. 11:69-76
Cocci of phosphate‐sequestering bacteria were found in the water column off Namibia where Recent phosphorites are forming. Furthermore, recent work on bacterial populations in the Benguela upwelling system shows that the population that occurs duri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b35c359f9529d30637b320b861030ca
https://doi.org/10.1080/01490459309377935
https://doi.org/10.1080/01490459309377935
Publikováno v:
Chemical Geology. 97:145-161
In Fe-poor and organic-rich marine sediments, reduced S is mainly organic due to the lack of reactive Fe. These sediments (e.g., carbonates, cherts, phosphates) have high C/S (organic carbon/total reduced sulfur) ratios which are, as a rule, > 3 and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3053a6fc73cf7b97654b27bd0194e369
https://doi.org/10.1016/0009-2541(92)90141-q
https://doi.org/10.1016/0009-2541(92)90141-q
The geochemistry and mineralogy of a condensed section, similar to 6 m thick of the West Kasrik member (Coniacian-Santonian) near the uplifted northern flank of the Mardin-Derik anticline (south-eastern Turkey) was studied. The only deposit exploited
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a99c2f008eb907b77cb751a13c4f687
http://acikerisim.sdu.edu.tr/xmlui/handle/123456789/94344
http://acikerisim.sdu.edu.tr/xmlui/handle/123456789/94344
Publikováno v:
Estuarine, Coastal and Shelf Science. 30:1-15
The trace metal contamination of estuarine sediments of the Kishon river, running through a large industrial zone of Israel, was studied. The sediments were analysed for trace metal (copper, cadmium, iron, lead, mercury and zinc) contents, organic ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::667a59e18530677c82a0428ead86cced
https://doi.org/10.1016/0272-7714(90)90073-z
https://doi.org/10.1016/0272-7714(90)90073-z