Australasian Tektites and Catastrophic Products Enclosed in Impact Ejecta Horizon from the Buntharik Impact Event in Thailand

Bunopas, Sangad; Paul, Vella; Shigeki, Hada; Henry, Fontaine; Burrett, Clive; Haines, Peter W.; Khositanont, Somboon; Howard, K. T.

doi:10.1016/s1342-937x(05)70389-0

Cited by 5 publications

(4 citation statements)

References 2 publications

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“…Additionally, the Chanthaburi terrane, classified as I-type granite, is known as the Triassic granite in the Eastern belt. Notably, gold deposits are related to the I-type granite found in the Chanthaburi Terrane [60,69] while heavy minerals are associated with the S-type granite [69][70][71].…”

Section: Geological Settingsmentioning

confidence: 99%

“…This area has several significant mineral deposits, which align with the Central metallogenic province [69]. Some base metals including chromium, tungsten, gold, silver, and copper [72], these minerals are primarily found in association with Permo-Triassic volcanic rocks and Triassic granitic intrusions, which are believed to have been emplaced during the collision of the Indian and Eurasian Plates [73].…”

Section: Geological Settingsmentioning

confidence: 99%

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Prediction of Au-Associated Minerals in Eastern Thailand Based on Stream Sediment Geochemical Data Analysis by S-A Multifractal Model

Yaisamut¹,

Xie²,

Charusiri³

et al. 2023

Preprint

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Conducted within the scope of geochemical exploration in Eastern Thailand, this study aims to detect geochemical anomalies and potential mineral deposits. The objective was to interpret intricate spatial dispersion patterns and concentration levels of deposit pathfinder elements, specifically arsenic (As), copper (Cu), and zinc (Zn), using a comprehensive array of stream sediment geochemistry data. Methodologies involved integrating multifractal properties and traditional statistics, facilitated by the GeoDAS and ArcGIS platforms as instrumental analytical tools. In total, 5,376 stream sediment samples were collected and evaluated, leading to the development of an in-depth geochemical map. The results indicated distinct geological units marked by substantially elevated average values of the aforementioned elements. Identification of geochemical anomalies was achieved through the spatial distribution method and the subsequent application of the Spectrum-Area (S-A) multifractal model. An intriguing link was found between high As concentrations and gold deposits in the area, suggesting As as a viable pathfinder element for gold mineralization. The anomaly maps, generated from the stream sediment data, spotlighted potential zones of interest, offering valuable guidance for future mineral exploration and geological inquiries. Nonetheless, it is vital to recognize that the increased values noted in these maps may be influenced by regional geological factors, emphasizing the necessity for a diverse set of analytical methods for accurate interpretation. The study's significance lies in its pioneering use of the S-A multifractal model in geochemical data analysis. This innovative approach has deepened our comprehension of geochemical dispersion patterns and improved the precision of mineral exploration.

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Section: Geological Settingsmentioning

confidence: 99%

Section: Geological Settingsmentioning

confidence: 99%

Prediction of Au-Associated Minerals in Eastern Thailand Based on Stream Sediment Geochemical Data Analysis by S-A Multifractal Model

Yaisamut¹,

Xie²,

Charusiri³

et al. 2023

Preprint

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“…Based on stratigraphic, palaeomagnetic and paleontological data, the Indochina Terrane was separated from Gondwana during Devonian, while the Shan-Thai Terrane was departed from Gondwana during Permian (Bunopas, 1981;Metcalfe, 1993Metcalfe, , 2002Metcalfe, , 2017. The earlier works indicated that Nan-Sra Kaeo Suture represents the Palaeo-Tethys which were closed during Late Paleozoic to Early Mesozoic, moreover, the closure of the Palaeo-Tethys also generated a pair of subduction zones and magmatic arcs along the east margin of the Shan-Thai Terrane, as Sukhothai Fold Belt, and the west margin of the Indochina Terrane as Loei Fold Belt (Bunopas, 1981;Bunopas and Vella, 1983;Charusiri et al, 1993). Subduction arc magmatism is important source of Permo-Triassic volcanic and Eastern Granitic Belt of Thailand (Beckinsale et al, 1979;Charusiri et al, 1993;Nakapadungrat and Putthapiban, 1992).…”

Section: Regional Tectonic Settingmentioning

confidence: 99%

Petrochemistry of intrusive rocks in Tha Takiap district, Chachoengsao province

Watcharamai¹

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In Thailand, alkaline granitoid rocks are less widespread and crop out in less extend as small stocks or plutons. The study areas are located in 2 vicinities of Tha Takiap and Mae Yan areas which respectively are a part of the eastern and central granite belts. Petrographic study of the rocks from both areas show that alkaline feldspar is the principal mineral phase with small amount of quartz and plagioclase. Compositionally, the investigated rocks fall in the range of alkali feldspar syenite to quartz-alkali feldspar syenite. High concentration of Na2O+K2O and high ratio of FeOtot/(FeOtot+MgO) vs SiO2 indicate that most of the rocks from both areas are syenite and ferroan granite respectively. High ratio of Ga/Al and Y/Nb suggest that the rocks from both areas belong to A2 subtype of A-type granite category. These rocks originated from alkaline magmatism related to extensional tectonic setting. Flat chondrite-normalized REE pattern and positive anomaly of Ta on primitive mantle-normalized spider diagrams are resemble to those of Xiaolonghe granite, southwestern China. These similarities imply that the genesis of Tha Takiap syenitic rocks is related to back-arc extension tectonic setting and the magmatic source is mainly influenced by mantle-derived material. On the other hand, the enrichment of LREE on the chondrite-normalized REE patterns of Mae Yan syenitic rocks and positive anomalies of Th, U, and Pb as well as negative anomalies of Nb and Ta on the primitive mantle-normalized diagrams indicate that the dominant source of partial melting could be derived from continental crust related to subduction tectonic comparable to, post-collisional potassic rock in Xungba basin, southern Tibet.

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“…As a result of the Tectonic events, the study area became the contract between the Korat Plateau and the Chao Phraya Basin. It was part of the Tectonic Chan -Thailand and Indochina (Bunopas and Vella 1983).…”

Section: Geological Historymentioning

confidence: 99%

Groundwater balance and safe yield of middle Khorat aquifer in the Khwae Hanuman sub-basin, Changwat Prachinburi

Kaewdum

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The lower Khwae Hanuman sub-basin covers about 900 km2 in the Nadi and Kabinburi Districts, Prachinburi province. Recently, people have developed groundwater used for various activities, particularly in agricultural areas and industrial estates. In this area, the demand for groundwater usage tends to be gradually increased and may result in declining of groundwater levels in the future. The objectives of the study were to evaluate the groundwater recharge amount into the middle Khorat aquifer and to assess safe yield in the aquifer. The groundwater recharges potential was estimated by the overlay method for several thematic layers, consisting of lithology, soil, land use, slope, lineaments density and drainage density, and finally multiplied by the annual 30-year rainfall by the ArcGIS software. According to hydrogeological characteristics and field survey, the groundwater aquifers can be divided into two aquifers: the Quaternary sediment (Q) and the Middle Khorat aquifer (Jmk). The groundwater level ranged from -37 to 35 m amsl. and groundwater flow generally orients in the north-south direction. The high recharge potentiality was about 33.9 km2 (2.3% of the area), located in the center of the area. Only 12.8% of the total precipitation infiltrates into the groundwater aquifer. As per the model results, the groundwater balance in Jmk aquifer of dry and rainy seasons in 2015, as well as the consecutive dry season in 2016 are 0.33, 0.32, and 0.38 Mm3/day, respectively. The study area can pump groundwater up to 27,286 m3/d or about 2 times the current pumping rate. Interestingly, when increasing pumping rate from 10 to 200%, drawdowns in the central of the study area around the industrial areas, appeared to be intensively increased in the range of 2.5-4.0 m. The first-hand recharge potential and safe yield information can be used to develop an effective groundwater exploration for agricultural purposes and to estimate suitable pumping rates in order to obtain long-term sustainable groundwater utilization without adversely affecting the environment.

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Australasian Tektites and Catastrophic Products Enclosed in Impact Ejecta Horizon from the Buntharik Impact Event in Thailand

Cited by 5 publications

References 2 publications

Prediction of Au-Associated Minerals in Eastern Thailand Based on Stream Sediment Geochemical Data Analysis by S-A Multifractal Model

Prediction of Au-Associated Minerals in Eastern Thailand Based on Stream Sediment Geochemical Data Analysis by S-A Multifractal Model

Petrochemistry of intrusive rocks in Tha Takiap district, Chachoengsao province

Groundwater balance and safe yield of middle Khorat aquifer in the Khwae Hanuman sub-basin, Changwat Prachinburi

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