Results 111 to 120 of about 51,712 (271)
Archaeometry, EarlyView.ABSTRACT As the capital of Makuria, Tungul was a major sociopolitical center within medieval Nubia, being the seat of a bishopric and a monastic community. During the excavation of the Kom H monastery, three burial crypts (Crypts 1–3) were uncovered.
Robert J. Stark +2 more
wiley +1 more source
Archaeometry, EarlyView.ABSTRACT The hillfort of Castrejón de Capote is one of the best investigated settlements of Late Iron Age southwest Iberia. Located in the territory that the classical sources attributed to the Celtici, it was occupied between the early 4th and the 1st centuries bce.
Beatrijs de Groot +2 more
wiley +1 more source
Eskişehir Osmangazi Üniversitesi Mühendislik ve Mimarlık Fakültesi DergisiHidrotermal akışkan faaliyetleri kiltaşı ve şeyl gibi bitümlü sedimanter kayaçlardaki Mo, U, Cu, Ni ve Zn gibi iz elementlerin zenginleşmesinin yanı sıra organik maddenin korunma derecesini de önemli ölçüde etkiler. İncelenen örneklerinin Fe/Ti (ort: 126,
Fuat Erol +3 more
doaj +1 more source
Untangling nutrient co‐regulation of ombrotrophic peatland development
Boreas, EarlyView.Multi‐method (FTIR, FT‐NIR and TGA) approaches characterizing the organic peat constituents at Holcroft Moss reveal a record of switches that reflect broadly hydroclimate variability governing the decomposition patterns. There are periods, however, where hydroclimate does not fully explain the variability observed and instead changes appear linked to ...
Richard C. Chiverrell +6 more
wiley +1 more source
Sr-Rb age determination of a Precambrian rock from Lake County, Ohio [PDF]
, 1972 The objective of this thesis was to date a Precambrian rock from the basement of Ohio. The Precambrian sample came from a disposal well drilled in Perry Township in Lake County, Ohio. The rock, which was of a granitic composition with secondary dolomite,
Vargo, Robert T.
core
Fluoride Varnish for Caries Prevention in Preschoolers: An Overview of Reviews
Community Dentistry and Oral Epidemiology, EarlyView.ABSTRACT Objectives This study aimed to overview the available evidence from systematic reviews (SRs) on the effects of fluoride varnish (FV) for caries prevention in preschoolers. Methods Systematic reviews, with or without meta‐analyses, of randomised controlled trials (RCTs) and quasi‐randomised trials evaluating the use of FV in preschoolers to ...
Flávia Macedo Couto +5 more
wiley +1 more source
Ar-Ar and Rb-Sr Ages of the Tissint Olivine-phyric Martian Shergottite [PDF]
The fifth martian meteorite fall, Tissint, is an olivine-phyric shergottite that contains olivine macrocrysts (approximately 1.5 mm) [1]. [2] reported the Sm-Nd age of Tissint as 596 plus or minus 23 Ma along with Rb-Sr data that defined no isochron. [3]
Agee, C. +8 more
core +1 more source
Sr, Nd Pb isotopic characteristics of granulite and pyroxenite xenoliths in Hannuoba basalts, Hebei Province, and their implications for geologic processes [PDF]
, 1998 Rb-Sr, Sm-Nd and Pb isotopic systematics are reported for granulite and pyroxenite xenoliths in Hannuoba basalts, Hebei Province. The isotopic characteristics of xenoliths suggest t hat they might have formed recently , although there is no strict ...
Chen, SH +4 more
core
RioM‐1: A New Calcite Reference Material for U‐Pb LA‐ICP‐MS Geochronology
Geostandards and Geoanalytical Research, EarlyView.Key Points RioM‐1 calcite was characterised for trace elements, U‐Pb geochronology, Sr and O isotopes using ID‐TIMS, LA‐ICP‐MS and SIMS. U‐Pb dates from ID‐TIMS and LA‐ICP‐MS across several independent laboratories returned identical results within uncertainty.
Marco Silva +10 more
wiley +1 more source