bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evidence for Neoarchean Basement for the Deccan Volcanic Flows around Koyna-Warna Region, Western India: Zircon U-Pb Age and Hf-isotopic Results
Authors: Rao Y. J. Bhaskar , Sreenivas B. , Kumar T. Vijaya , Khadke Namrata , Krishna A. Kesava , Babu E. V. S. S. K. 
Published: December 2017

ABSTRACT
Deep boreholes around the Koyna-Warna seismic zone in the southwestern part of the Deccan Volcanic Province (DVP) enable a rare access to the basement beneath the thick (typically 1-2 km) lava pile, the nature of which has been enigmatic for long. Utilizing the drill core from borehole KBH-1 near Rasati village, we present here in situ Laser Ablation – Inductively Coupled Plasma Mass Spectrometry (LA-ICPMS) and LA-MC (multi collector)-ICPMS zircon U-Pb age and Hf-isotopic composition for two samples along with a brief description of the petrology and geochemistry of the representative lithounits of the basement section. The KBH-1 basement section comprises predominantly grey migmatite gneisses of granodiorite, tonalite and quartz monzodiorite composition apart from minor pink monzogranite. The grey gneisses show geochemical affinity to Neoarchean Tonalite-Trondhjemite-Granodiorite (TTG) suites and modern calc-alkalic granitoids. Zircons from a granodiorite and a monzogranite samples yield consistent U-Pb ages of 2710± 63 Ma and 2700±49 Ma (2σ errors). The initial 176Hf/177Hf values lie in a narrow range (0.281162 to 0.281283) corresponding to εHf(T) values of +3.7 to +8.0 indicating that the magmatic precursors of the KBH-1 gneisses represent juvenile magmatism around 2700 Ma. In terms of the composition and age, a correlation between the gneisses in the KBH-1 borehole and the Neoarchean basement gneisses of the Eastern Dharwar Craton (EDC) is emphasized arguing for the extension of the EDC to the Koyna-Warna region.
Granite-gneiss Basement below Deccan Traps in the Koyna Region, Western India: Outcome from Scientific Drilling
Authors: Misra Surajit , Bartakke Vikrant , Athavale Gaurav , Akkiraju Vyasulu V. , Goswami Deepjyoti , Roy Sukanta 
Published: December 2017

ABSTRACT
The Koyna region, located in the Deccan Flood Basalt Province of western peninsular India has been experiencing reservoir triggered seismicity since the impoundment of the Shivajisagar water reservoir in 1962. Scientific drilling carried out to 1522 m depth in the vicinity of the seismogenic zone exposed the granitic basement that lay below the Deccan Traps and provided a unique opportunity to study the rock types, petrological characteristics and microstructures. Cores obtained from drilling at four sites considered to be representative of the Koyna region, were studied. The boreholes include KBH-1 (Rasati) in the northern part, KBH-5 (Phansavle) in the western part, KBH-6 (Ukhalu) and KBH-7 (Panchgani) in the eastern part of the region. Each borehole penetrates the entire pile of Deccan basalt and pass through a few hundred metres of the granitic basement. The salient results are as follows: (i) The basement granitoids are dominantly composed of granite-gneiss, granite and migmatitic gneiss, typical of cratonic gneiss exposed in peninsular India. (ii) Petrology and microstructure study confirm the occurrence of strained quartz and unstrained plagioclase feldspars in the basement granitoids. (iii) Localized fault zones within the basement section, with prominent evidences of fault breccia, fault gouge, slicken lines with slickensides and pseudotachylite veins are observed in the individual boreholes. (iv) Anastomosing fracture network within these fault zones are good pathways for water channelization, which is supported by the higher abundances of ferruginous and siliceous secondary precipitations following the fractures.
A 1251m-thick Deccan Flood Basalt Pile Recovered by Scientific Drilling in the Koyna Region, Western India
Authors: Mishra Satrughna , Misra Surajit , Vyas Digant , Nikalje Dinesh , Warhade Ashish , Roy Sukanta 
Published: December 2017

ABSTRACT
A 1251 m thick succession of Deccan lava flows has been recovered by scientific drilling in the Koyna region, western part of the Deccan Volcanic Province (DVP). Forty-six lava flows, starting with the first flow overlying the granitic basement in the region, have been identified through mesoscopic studies of cores obtained from a 1500 m deep borehole KBH7 in Panchgani village of Patan sub-division. Mesoscopic observations supported by petrographic studies bring out the characteristics of the basaltic pile. The salient findings are as follows. The thickness of Deccan trap in the Panchgani area is 1251.20 m, comprising a succession of 40 simple lava flows and 6 compound lava flows. The contact with the underlying granitic basement occurs over a short span of 90 cm. Infra-trappean sediments are absent. Overall, ∼74% of the basaltic pile is constituted of massive basalt and ∼24% vesicular/amygdaloidal basalt. Red bole horizons are observed in 7 flows. Nine giant plagioclase basalt (GPB) flows are identified in the single vertical section. The long basalt core may serve as a model Deccan trap section for correlation with the flows exposed at the surface in the Koyna and surrounding region and support detailed investigations to constrain the duration of Deccan volcanism.
Recent Seismicity Patterns and Microearthquake Activity on an Active Intraplate Fault System at Koyna-Warna, Western India
Authors: Shashidhar D. , Mallika K. , Mahato C.R. , Maity B. S. , Satyanarayana H. V. S. 
Published: December 2017

ABSTRACT
Recent seismic activity of the Koyna region, western India is reported in this article. The Koyna region is considered to be one of the premier sites of reservoir triggered seismicity worldwide and it has been quite active since the initial impoundment of Shivaji Sagar Lake, north of Koyna Dam, during 1962 and nearby Warna Reservoir in 1985. Recently, a borehole seismic network consisting of 6 seismometers is deployed below the Deccan Traps to monitor the earthquakes in the study region, which recorded a large number of microearthquakes. A dense network of 23 surface broadband seismometers was also operative during the study period. A total of 2478 earthquakes of ML -0.8 to 3.7 recorded by the borehole seismic network, occurred during January 2016 to May 2017. Seismicity patterns in the recent time, which includes a few new zones of intense seismicity clusters in the vicinity of the borehole locations, are identified. Reservoir water levels are found to be strongly associated with the seismicity patterns. The seismicity is mostly concentrated in the vicinity of the Donachiwada fault and Warna during January – May, whereas it spreads during June – December. ‘b’ values have been estimated and found to be varying from 0.74 to 0.93. Seismicity continues to be present in the identified block where the pilot borehole has been drilled.
Reservoir Loading Parameters at Koyna and their Correspondence with Reservoir Triggered Seismicity
Authors: Anuradha M. Uma , Mallika K. 
Published: December 2017

ABSTRACT
Several water reservoir loading parameters such as the rate of loading, highest water levels reached, duration of retention of high water levels and whether the previous water maxima has been exceeded or not, influence reservoir triggered seismicity (RTS) in the vicinity of Koyna and Warna reservoirs. Here we present an update in the change of these parameters and their relation with RTS in the Koyna-Warna region.
Data Integration in the Service of Synthetic Research
Authors: Kintigh Keith W. , Spielmann Katherine A. , Brin Adam , Candan K. Selçuk , Clark Tiffany C. , Peeples Matthew 
Published: December 2017

ABSTRACTAddressing archaeology's most compelling substantive challenges requires synthetic research that exploits the large and rapidly expanding corpus of systematically collected archaeological data. That, in turn, requires a means of combining datasets that employ different systematics in their recording while at the same time preserving the semantics of the data. To that end, we have developed a general procedure that we call query-driven, on-the-fly data integration that is deployed within the Digital Archaeological Record digital repository. The integration procedure employs ontologies that are mapped to the original datasets. Integration of the ontology-based dataset representations is done at the time the query is executed, based on the specific content of the query. In this way, the original data are preserved, and data are aggregated only to the extent necessary to obtain semantic comparability. Our presentation draws examples from the largest application to date: an effort by a research community of Southwest US faunal analysts. Using 24 ontologies developed to cover a broad range of observed faunal variables, we integrate faunal data from 33 sites across the late prehistoric northern Southwest, including about 300,000 individually recorded faunal specimens.
Justice Climates and Management Team Effectiveness: The Central Role of Group Harmony
Authors: Ünal Ali F. , Chen Chao C. , Xin Katherine R. 
Published: December 2017

ABSTRACTAlthough social harmony is one of the most important cultural values in many of Asian societies it has rarely been studied in the mainstream management literatures. Based on the group-value theory of justice we examined how group justice climates influence group effectiveness through group harmony. Analyses of data on 106 upper-level management teams from Chinese organizations showed that justice climates were positively associated with group harmony, which in turn was positively associated with team task performance and team helping behavior. Group harmony was found to significantly mediate the positive effect of both distributive and interactional justice climates on team helping behavior but only marginally on team task performance. Finally, in support of past research both at the group and individual level, procedural justice climate had the weakest effect on group processes and outcomes. By applying the group value theory on group harmony this paper aims to integrate Eastern and Western perspectives on one hand and the justice climates and group harmony research on the other. Theoretical and practical implications are discussed.
Radiocarbon Dating of Underwater Archaeological Objects from the Nevado de Toluca, Mexico
Authors: Martínez-Carrillo M A , Solís C , Bautista I Hernández , Sánchez R Junco , Rodríguez-Ceja M , Ortiz M E , Chávez-Lomelí E 
Published: December 2017

ABSTRACTThe Nevado de Toluca is a stratovolcano located in the southwest of the Toluca Valley in central Mexico. At a height of around 4200 m there are two crater lakes: El Sol and La Luna. Since Precolumbian times, people in the surrounding valleys carried out rituals and deposited offerings into the lakes. After the Spanish conquest, these rituals were kept alive clandestinely. Currently, reminiscent of Mesoamerican rituals subsist. Due to the long duration of the ritual at the Nevado de Toluca, it is important to date the materials recovered in the underwater and terrestrial archaeological explorations. This article proposes a chronology of Prehispanic ritual activities performed in the Nevado de Toluca based on the characterization and radiocarbon (14C) dating performed to materials from the volcano’s lakes.
U/Th and 14C Crossdating of Parietal Calcite Deposits: Application to Nerja Cave (Andalusia, Spain) and Future Perspectives
Authors: Valladas Hélène , Pons-Branchu Edwige , Dumoulin Jean Pascal , Quiles Anita , Sanchidrián José L , Medina-Alcaide Maria Ángeles 
Published: December 2017

Abstract14C and U/Th methods were used to date three thin carbonate layers deposited on decorated walls of Nerja Cave (Malaga, southern Spain) in order to constrain the age of the parietal non-figurative marks situated under these carbonate layers. Modern formations were also dated to estimate the detritic contribution for the U/Th method and the dead carbon proportion for 14C dating. We sampled two locations with ocher painting marks. In one case (mark 1), the good agreement between the ages obtained by the two methods suggests that the sample was not subjected to post-deposition alteration and that the results are reliable. In the other case (mark 2), the age discrepancy between the two methods reached 30,000 yr, indicating that geochemical alteration had affected the sample and that one or both results were inaccurate. The ages for mark 1 indicate that this type of non-figurative representation is older than 25,000 cal BP and that it can be associated with the oldest attested Paleolithic occupation of Nerja Cave.
14C Dating of an Old Wooden Building: Hikobe House in Gunma Prefecture, Japan
Authors: Nakao Nanae , Sakamoto Minoru , Imamura Mineo , Ozaki Hiromasa , Kobayashi Koichi 
Published: December 2017

AbstractHikobe House is an important cultural property located in Gunma prefecture. It is one of the oldest manor houses in the Kanto region of Japan. The age of the Hikobe House has up to now been uncertain. There are no architectural records or memorandum tags that indicate when the Hikobe House was built. The living room of the Hikobe House has a style of the latter half of the 17th century, while the guest rooms exhibit a style more typical of the 16th century. So, architectural historians did not agree when the house was built. The wooden materials of the Hikobe House (zelkova, cherry tree, and Japanese red pine) are species that are not well suited to dendrochronology. Thus we investigated the materials of the Hikobe House using the radiocarbon (14C) dating method. Using both the 14C wiggle-match dating method on short tree-ring sequences and observations of remodeling traces of the materials, we were able to establish a credible age of Hikobe House as dating from the late 17th century.
Mortar Dating Methodology: Assessing Recurrent Issues and Needs for Further Research
Authors: Hayen Roald , Van Strydonck Mark , Fontaine Laurent , Boudin Mathieu , Lindroos Alf , Heinemeier Jan , Ringbom Åsa , Michalska Danuta , Hajdas Irka , Hueglin Sophie , Marzaioli Fabio , Terrasi Filippo , Passariello Isabella , Capano Manuela , Maspero Francesco , Panzeri Laura , Galli Anna , Artioli Gilberto , Addis Anna , Secco Michele , Boaretto Elisabetta , Moreau Christophe , Guibert Pierre , Urbanova Petra , Czernik Justyna , Goslar Tomasz , Caroselli Marta 
Published: December 2017

AbstractAbsolute dating of mortars is crucial when trying to pin down construction phases of archaeological sites and historic stone buildings to a certain point in time or to confirm, but possibly also challenge, existing chronologies. To evaluate various sample preparation methods for radiocarbon (14C) dating of mortars as well as to compare different dating methods, i.e.14C and optically stimulated luminescence (OSL), a mortar dating intercomparison study (MODIS) was set up, exploring existing limits and needs for further research. Four mortar samples were selected and distributed among the participating laboratories: one of which was expected not to present any problem related to the sample preparation methodologies for anthropogenic lime extraction, whereas all others addressed specific known sample preparation issues. Data obtained from the various mortar dating approaches are evaluated relative to the historical framework of the mortar samples and any deviation observed is contextualized to the composition and specific mineralogy of the sampled material.
Comparison of Two Bone-Preparation Methods for Radiocarbon Dating: Modified Longin and Ninhydrin
Authors: Dumoulin J-P , Messager C , Valladas H , Beck L , Caffy I , Delqué-Količ E , Moreau C , Lebon M 
Published: December 2017

ABSTRACTIn this paper, first results comparing modified Longin and ninhydrin collagen extraction methodologies are presented. The goal of this study is to investigate the bones of several species with different ages, preservation conditions, and collagen contents to determine the most suitable preparation method. Different types of samples are used such as VIRI samples, previously dated bones, and background samples. Each bone has undergone elemental analysis, infrared analysis, and 14C measurement. The results are presented and the advantages and disadvantages of each preparation method are discussed. In general, results obtained by the two methods are in accordance with the consensus value for 2σ uncertainty. For VIRI I and a mammoth bone, the ninhydrin preparation gives, respectively, 8450±70 BP and 14,870±60 BP whereas the modified Longin process gives 8365±45 BP and 14,750±100 BP in agreement with the expected values. From the experimental point of view, the modified Longin process is easier to implement than the ninhydrin protocol. From this approach, we can conclude that the modified Longin process could be preferred in most cases and particularly when the amount of bone is small and the sample is not too contaminated.
Fine Structure and Reproducibility of Radiocarbon Ages of Middle to Early Modern Japanese Tree Rings
Authors: Sakamoto Minoru , Hakozaki Masataka , Nakao Nanae , Nakatsuka Takeshi 
Published: December 2017

ABSTRACTThis study carried out accelerator mass spectrometry radiocarbon (AMS 14C) measurement of Japanese tree rings dating from the middle to early modern eras to investigate calibration curve fine structure. Tree-ring ages were determined by dendrochronology or δ18O chronology for Japanese trees. 14C ages from the 15th century to the middle of the 17th century followed the IntCal13 calibration curve within measurement error. Different patterns of fluctuations during the latter half of the 17th century to the early the 18th century were observed in different tree samples. In the 19th century, patterns of 14C ages of different samples appeared similar but did not exactly match each other.
Cross-Flow Nanofiltration of Contaminated Protein-Containing Material: State of the Art
Authors: Boudin Mathieu , Bonafini Marco , van den Brande Tess , Vanden Berghe Ina 
Published: December 2017

ABSTRACTRadiocarbon (14C) dating of protein-containing material (collagen, hair/wool, silk, leather) contaminated with extraneous carbon (e.g. humic substances) might result in unreliable dates when pretreated with the conventional but inadequate protocols. In this study cross-flow nanofiltration was applied to pretreated, protein-containing material. This method is able to remove low-molecular and high-molecular weight contaminants as demonstrated in previous studies. The sample quality improvement by cross-flow nanofiltration is verified by measuring the C:N ratio before and after nanofiltration. If the C:N ratio of the permeate (sample after cross-flow nanofiltration) falls within the C:N boundaries for uncontaminated wool/hair, silk and bone collagen, it is assumed to be contamination free. In our study, we focused on wool, silk, and collagen samples of known historical age. All samples treated by cross-flow nanofiltration effectively outputs C:N ratios within the expected range and yield for more accurate14C date in agreement with historical expectations whereas bulk samples with C:N ratio out of the expected ranges, give either younger or older dates. We thus highlight both that C:N ratio is a good indicator of contamination and that cross-flow nanofiltration is an efficient method to treat protein-containing materials prior to14C dating.
The Lady of Gold: Sikandar Lodī’s mother (c. 837/1433–922/1516) and the tomb attributed to her at Dholpur, Rajasthan
Authors: Shokoohy Mehrdad , Shokoohy Natalie H. 
Published: December 2017

AbstractUntil the Mughal period historians of Muslim India hardly mention ladies, as it was considered discourteous, and even then only a handful of noble women were deemed worthy of mention. A secluded lady was of concern only to the man of the house. There was Sultan Raḍiya, Īltutmish's daughter, who succeeded to the throne and enjoyed a degree of freedom during Turkish rule in India, but was killed, accused of an illicit relationship with a black slave. Nevertheless, many women's influence reached beyond the harem and their voices appear between the lines. One such woman was the Sharqī Sultan Muḥammad's mother, Bībī Rājī, who played a significant role in the affairs of Jaunpur, but this article concerns another: Sultan Sikandar Lodī’s mother, known as Bībī Zarrīna (the Lady of Gold) who defied the Lodī nobility to put her son on the throne. Here we explore her story and study her tomb.
Depth Resolution Dependence on Sample Thickness and Incident Energy in On-Axis Transmission Kikuchi Diffraction in Scanning Electron Microscope (SEM)
Authors: Brodu Etienne , Bouzy Emmanuel 
Published: December 2017

AbstractTransmission Kikuchi diffraction is an emerging technique aimed at producing orientation maps of the structure of materials with a nanometric lateral resolution. This study investigates experimentally the depth resolution of the on-axis configuration, via a twinned silicon bi-crystal sample specifically designed and fabricated. The measured depth resolution varies from 30 to 65 nm in the range 10–30 keV, with a close to linear dependence with incident energy and no dependence with the total sample thickness. The depth resolution is explained in terms of two mechanisms acting concomitantly: generation of Kikuchi diffraction all along the thickness of the sample, associated with continuous absorption on the way out. A model based on the electron mean free path is used to account for the dependence with incident energy of the depth resolution. In addition, based on the results in silicon, the use of the mean absorption coefficient is proposed to predict the depth resolution for any atomic number and incident energy.
Development and evaluation of a six-day training program in supportive oncology research
Authors: Pirl William F. , Greer Joseph A. , Park Elyse , Safren Steven A. , Fields Lauren , Wood Lisa , Traeger Lara , El-Jawahri Areej , Zebrack Bradley , Temel Jennifer S. 
Published: December 2017

AbstractObjectiveEarly career investigators have few opportunities for targeted training in supportive oncology research. To address this need, we developed, implemented, and evaluated an intensive, six-day workshop on methods in supportive oncology research for trainees and junior faculty across multiple disciplines.MethodA multidisciplinary team of supportive oncology researchers developed a workshop patterned after the clinical trials workshop offered jointly by the American Society of Clinical Oncology and American Association of Cancer Research. The curriculum included lectures and a mentored experience of writing a research protocol. Each year since 2015, the workshop has accepted and trained 36 early career investigators. Over the course of the workshop, participants present sections of their research protocols daily in small groups led by senior researchers, and have dedicated time to write and revise these sections. Primary outcomes for the workshop included the frequency of completed protocols by the end of the workshop, a pre- and posttest assessing participant knowledge, and follow-up surveys of the participants and their primary mentors.ResultOver three years, the workshop received 195 applications; 109 early career researchers were competitively selected to participate. All participants (109/109, 100%) completed writing a protocol by the end of their workshop. Participants and their primary mentors reported significant improvements in their research knowledge and skills. Each year, participants rated the workshop highly in terms of satisfaction, value, and likelihood of recommending it to a colleague. One year after the first workshop, most respondents (29/30, 96.7%) had either submitted their protocol or written at least one other protocol.Significance of resultsWe developed a workshop on research methods in supportive oncology. More early career investigators applied for the workshop than capacity, and the workshop was fully attended each year. Both the workshop participants and their primary mentors reported improvement in research skills and knowledge.