Journal of Earth and Marine Technology (JEMT)最新文献_第4页

Geological Mapping of Gunungbatu and Surrounding Areas, Bodeh District, Pemalang Regency, Central Java 古南巴图及周边地区地质填图，渤德区，柏马朗县，中爪哇

Journal of Earth and Marine Technology (JEMT) Pub Date : 2021-09-30 DOI: 10.31284/j.jemt.2021.v2i1.2167

F. Widiatmoko, Mochammad Aziz, Irwan Firmansyah

{"title":"Geological Mapping of Gunungbatu and Surrounding Areas, Bodeh District, Pemalang Regency, Central Java","authors":"F. Widiatmoko, Mochammad Aziz, Irwan Firmansyah","doi":"10.31284/j.jemt.2021.v2i1.2167","DOIUrl":"https://doi.org/10.31284/j.jemt.2021.v2i1.2167","url":null,"abstract":"Mapping is the activity of collecting data from an area to be mapped, in the context of geology mapping means collecting data that includes descriptions of rocks, rock structures, rock positions, structure measurements (plunge/trend, pitch, microfold), rock thickness measurements, rock sampling and sketches. landscape, covering an area to be mapped. Research in the area of Gunungbatu and its surroundings, Bodeh District, Pemalang Regency, Central Java Province with the aim of knowing and knowing that it is in the research area by reconstructing the history of formation or geomorphological history, merely tectonic history in space and time, reconstructing geological history based on micropaleontological analysis. Based on the analysis carried out, it was found that the geomorphological units of the study area were divided into 5, namely the Gunungbatu Syncline Hills Unit, the Kali Bodas Anticline Valley Unit, the Girimulya Syncline Hills Unit, the Cenggiri Homocline Hills Unit and the Kebubung Homocline Valley Unit. The geology of the study area consists of two unofficial rock units in order from oldest to youngest, namely the claystone-sandstone unit and the sandstone-claystone unit. The geological structures of the pinpoint folds and faults are Mount Ketos Syncline, Kali Bodas Anticline, Gapura Syncline, Pertapan Igir Syncline, Cenggiri River Rising Fault, Kebubung Dextral Fault, and Girimulya Dextral Fault. The geological history of the research area begins with the book Unit of Claystone in the Middle Miocene Environment in Upper Bathyal. Furthermore, after the claystone-sandstone units were deposited, during the Middle Miocene – Late Miocene in the Deep Neritic Environment, the sandstone-claystone units were deposited with a turbidite mechanism. As well as the geological resource potential of the research area in the form of river utilization in the form of chunks of igneous rock, river sand deposits and gold seepage. Meanwhile, the potential for geological disasters in the form of landslides.","PeriodicalId":363304,"journal":{"name":"Journal of Earth and Marine Technology (JEMT)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125354529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Slope Stability Analysis Based on Safety Factors on Slope CV. Mutiara Timur in Klampok Village, Tongas District, Probolinggo Regency 基于边坡CV安全系数的边坡稳定性分析Mutiara Timur, Probolinggo摄政汤加斯区Klampok村

Journal of Earth and Marine Technology (JEMT) Pub Date : 2021-09-30 DOI: 10.31284/j.jemt.2021.v2i1.2168

Yazid Fanani, Apri Dwi Astuti, Andres Kevi Paki

{"title":"Slope Stability Analysis Based on Safety Factors on Slope CV. Mutiara Timur in Klampok Village, Tongas District, Probolinggo Regency","authors":"Yazid Fanani, Apri Dwi Astuti, Andres Kevi Paki","doi":"10.31284/j.jemt.2021.v2i1.2168","DOIUrl":"https://doi.org/10.31284/j.jemt.2021.v2i1.2168","url":null,"abstract":"CV. Mutiara Timur is a company that is applying for a mining business permit for sirtu commodities in Klampok Village, Tongas District, Probolinggo Regency. The planned mining system is open pit mining using the quarry method. From the results of research in the field obtained rock lithology in the form of topsoil, gravel and sand. Where in the slope design later, the topsoil will be peeled off first. The purpose of slope stability analysis is to determine the geometry of the slope by taking into account the safety factor in order to create safe working conditions. Slope stability analysis on CV. Mutiara Timur using the Bishop method using the Slide v6.0 software. Based on the analysis carried out, the recommendation for slope geometry on a single slope is 4 meters high with a slope of 600 so that the no-load safety factor is 1.350 and the safety factor with load is 1.267. In addition, the slope geometry is obtained on the overall slope, which is a total height of 21 meters with a slope of 380 so that the no-load safety factor is 1.243 and the safety factor with the load is 1.239.","PeriodicalId":363304,"journal":{"name":"Journal of Earth and Marine Technology (JEMT)","volume":"167 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115532183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Relation of Fault Fracture Density with the Residual Gravity; case study in Muria 断层破裂密度与残余重力的关系Muria的案例研究

Journal of Earth and Marine Technology (JEMT) Pub Date : 2021-03-31 DOI: 10.31284/J.JEMT.2021.V1I2.1743

F. Widiatmoko, R. K. Putri, H. L. Sunan

引用次数: 7

The Effect of Stress Distribution Around The Decline Shaft on The Support System Stability in Underground Mining 地下开采倾斜竖井周围应力分布对支护系统稳定性的影响

Journal of Earth and Marine Technology (JEMT) Pub Date : 2021-03-31 DOI: 10.31284/J.JEMT.2021.V2I1.1726

Diana Irmawati Pradani

引用次数: 1

Laterite Nickel Mine Sequence Modeling Based on Total Reserve at Block 5A, “Bonus” Pit by Surpac 6.3.2 at PT Bintang Delapan Mineral in Bahodopi District, Morowali Regency, Central Sulawesi 基于Surpac 6.3.2在中苏拉威西Morowali Regency Bahodopi地区PT Bintang Delapan Mineral“Bonus”坑5A区块总储量的红土镍矿序列建模

Journal of Earth and Marine Technology (JEMT) Pub Date : 2021-03-31 DOI: 10.31284/J.JEMT.2021.V2I1.1725

Harsalim Aimunandar Jayaputra

引用次数: 0

Multi-attribute Seismic application for Modeling Static Reservoir In “Athran” Field South Sumatera Basin 多属性地震在南苏门答腊盆地“Athran”油田静态储层建模中的应用

Journal of Earth and Marine Technology (JEMT) Pub Date : 2020-09-30 DOI: 10.31284/J.JEMT.2020.V1I1.1187

D. Agustine

{"title":"Multi-attribute Seismic application for Modeling Static Reservoir In “Athran” Field South Sumatera Basin","authors":"D. Agustine","doi":"10.31284/J.JEMT.2020.V1I1.1187","DOIUrl":"https://doi.org/10.31284/J.JEMT.2020.V1I1.1187","url":null,"abstract":"“Athran” field is an active field for hydrocarbon exploration with trending northeast-southwest and focus on the reservoir zone is the Talang Akar Formation with A-C layer intervals. The method used in this research is electrofacies, delta deposition system, formation evaluation, static reservoir modeling, and multi-attribute linear regression. The distribution of reservoir modeling is done by using the stochastic variogram method to make modeling lithofacies and depositional facies. Identification of lithofacies in the study area obtained two units, namely sandstone and shale facies. The depositional facies analysis was carried out using the electrofacies approach, showing that the research target was in a transitional environment with a delta deposition system, namely the distributary channel, delta front and prodelta. The deposition process. Sandstones and shales affect the distribution of porosity which functions as a reservoir property. The data integration of the distribution of lithofacies, gamma ray and porosity was carried out using the multi-attribute linear regression method to predict data both vertically and horizontally. The results of this study are used to help determine the distribution direction and direction of sediment deposition as a good reservoir zone for exploration activities.","PeriodicalId":363304,"journal":{"name":"Journal of Earth and Marine Technology (JEMT)","volume":"198 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116149779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Groundwater quality in Ponjong Karst, Gunungkidul Regency, Special Region of Yogyakarta 日惹特区Gunungkidul县Ponjong岩溶的地下水质量

Journal of Earth and Marine Technology (JEMT) Pub Date : 2020-09-03 DOI: 10.31284/j.jemt.2020.v1i1.1142

A. Sari, K. SariBahagiarti, S. Suharsono, C. Prasetyadi

{"title":"Groundwater quality in Ponjong Karst, Gunungkidul Regency, Special Region of Yogyakarta","authors":"A. Sari, K. SariBahagiarti, S. Suharsono, C. Prasetyadi","doi":"10.31284/j.jemt.2020.v1i1.1142","DOIUrl":"https://doi.org/10.31284/j.jemt.2020.v1i1.1142","url":null,"abstract":"The hydrogeological condition of a region is determined by the type of lithology, morphology, and subsurface conditions where the condition is very helpful in the study of groundwater exploration. Especially when we encounter interesting geological conditions when the groundwater exploration in the karst area in which volcanic rocks are resulting from the activities of the active volcano in the past. Groundwater exploration at Ponjong area and surrounding does have its special characteristics, because it has 2 different rock characteristics where the northern part of the research area in the form of a karst area (limestone of Wonosari Formation) while the southern part is an area of ancient volcanoes with dominant volcanic rocks from Wuni Formation, As for the research on the above and subsurface research area where the research is conducted based on surface geology mapping, geoelectric data collection, and groundwater sampling. Geological mapping includes geomorphological data, stratigraphy, and geological structure. The aquifer system of the research area can be divided into two systems, inter-grain aquifer systems, and fracture aquifer systems. Overall quality groundwater in the research area is quite good. Ponjong District there are mining activities that have resulted in changes in the land use system in the area. This can cause changes in the water surplus in the area due to the changing catchment area.","PeriodicalId":363304,"journal":{"name":"Journal of Earth and Marine Technology (JEMT)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120985091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2