Heavy Metals Distribution in the Artisanal Gold Mining Area in Wonogiri

Artisanal and small gold mining activity in Wonogiri Regency has long been done with problems on environmental quality. This study was aimed to analyze the levels and spatial distribution of heavy metals in the mining area. Survey of  mining and amalgamation sites, sampling the soil and tailings had been conducted. There were 66 samples of soil and tailing were collected, analysis of heavy Fe, Mn, Pb, Hg, As and Co, using X-ray fluorescence (XRF). Normal distribution test of data was conducted using the Kolmogorov-Smirnov and Shapiro Wilk.  The spatial distribution of heavy metals was described using Krigging method. Contents of most heavy metals in the area studied were high, except for Co. According to the distribution pattern of heavy metals indicated that the contamination caused by the mining

PALEOTEMPERATURE INTERPRETATION BASED ON CALCAREOUS NANNOPLANKTON OF KEDUNG SUMBER RIVER SECTION, SOKO, BOJONEGORO, EAST JAVA

Analysis of 64 samples taken from the Kedung Sumber River section represent of Kalibeng Formation, Atasangin Member, Klitik Member, Sonde Formation, and Pucangan Formation. The detail of nannoplankton analysis showing that temperature changes influenced to the growth of nannoplankton.  Result of this study reveals that a number of 32 zones paleotemperature change. Age of the Kalibeng Formation is Late Miocene to Early Pliocene (NN10-NN13), divided into nine zones: 1/warm, 2/cold, 3/transitional, 4/warm, 5/cold, 6/warm, 7/cold, 8/cold, 9/warm zone. Atasangin Member are divided into 3 zones: 10/cold, 11/warm, 12/cold zone. Age of this member is Early Pliocene (NN13-NN14). Klitik Member is Early Pliocene to Late Pliocene (NN14-NN17), and divided to 7 zones: 13/transitional, 14/warm, 15/cold, 16/warm, 17/cold, 18/warm zone. Age of Sonde Formation is NN18-NN20 (Late Pliocene to Early Pleistocene), have into 7 zones: 19/cold, 20/warm, 21/transitional, 22/cold, 23/transitional, 24/cold, 25/transitional, 26/ cold, 27/transitional zone, 28/warm, 29/cold zone. Pucangan Formation are divided into 3 zones: 30/warm, 31/transitional, 32/cold zone. Age of this formation is Pleistocene (NN20-NN21)

ETNOBOTANI TANAMAN ANTIPIRETIK MASYARAKAT DUSUN MESU BOTO JATIROTO WONOGIRI JAWA TENGAH

Traditional medicine in Indonesia has been known to the public long before formal health services with modern medicine. Indonesia has many species of plants that have properties to cure various diseases and some other useful properties for human health. Antipyretic plants are plants that have the property as a febrifuge. The content of flavonoids in plants merit as a reliever fever (antipyretic). This study aims to determine the garden plants that can be utilized by the community as a febrifuge. (antipyretic). The research method used is survey method. The location of the observation and sampling of the plants was done by purposive random sampling technique by plot plot size 2x2 meter, 5x5 meter (adjust the location of the land). Based on research and observation, there are 8 species of antipyretic plants tumeric (Curcuma domestica),  papaya (Carica papaya), dadap (Erythrina sp), hibiscus (Hibiscus rosasinensis), rambutan (Nephelium lappaceum), banana ( Musa  paradisiaca), soursop (Annona muricata), and yam (Pachirrhyzus erosus) which can be utilized by the local community

Studi Hidrogeokimia Air Tanah di Daerah Kebumen Bagian Barat, Indonesia

Abstrak - Studi penilaian hidrogeokimia air tanah telah dilakukan di Kebumen bagian barat yang dicirikan dengan fitur karstnya berdasarkan parameter fisikokimia (pH, konduktivitas elektrik, zat padat terlarut, kesadahan, Ca2+, Mg2+, Fe3+, Mn2+, K+, Na+, Li+, and NH4+, HCO3-, Cl-, SO42-, NO2-, and NO3-). Data sampel air diambil dari 25 sumber air tanah dangkal berupa mata air, goa basah dan sumur. Data fisikokimianya mengindikasikan hanya ada kontaminasi alami maupun dari manusia yang sangat rendah. Dari diagram Piper ditunjukkan bahwa fasies air tanah yang berada di daerah ini adalah kalsium-magnesium bikarbonat yang mengindikasikan efek litologi karbonatan yang sangat kuat ke air tanah. Diagram Durov menunjukkan bahwa air tanah di daerah studi hanya mengalami pertukaran ion yang sangat rendah yang mengindikasikan kemurnian air tanah ini dari dampak kontaminasi alami maupun dampak antropogenik.Kata kunci: hidrogeokimia, air tanah, karst, Kebumen Abstract - A groundwater hydrogeochemistry assessment study has been conducted in western Kebumen, characterized by its karstic features based on physicochemical parameters (pH, electric conductivity, total dissolved solids, hardness, Ca2+, Mg2+, Fe3+, Mn2+, K+, Na+, Li+, and NH4+, HCO3-, Cl-, SO42-, NO2-, and NO3-). Water samples were taken from 25 shallow groundwater sources such as springs, wet caves, and wells. The physicochemical data indicates very low natural and/or human contamination. The Piper diagram shows that the groundwater facies in this area is calcium-magnesium bicarbonate, indicating a very strong effect of carbonate lithology on groundwater. The Durov diagram shows that the groundwater in the study area only undergoes very low ion exchange, indicating the purity of this groundwater from natural contamination or anthropogenic impacts.Keywords: hydrogeochemistry, groundwater, karst, Kebume

Soil Layers Properties of a Profile Developed on the Past Depositional Series on Merbabu Volcano Central Java Indonesia

A wide and deep soil profile (around 1200 cm) was observed at Ketep Park West Slope of Merbabu volcano Central Java, Indonesia to identify the soil morphology, physical and, chemical and mineralogical properties.  Results showed that several soil development processes occurred in each volcanic deposits with different characteristics.  Most soil layers met some of andic soil properties criteria such bulk density 85%, and (Alo + ½ Feo) >2.0%.  A thin melanic material showing black color layer was found at the lower part of the soil profile, i.e. in depth from 726 to 798 cm.  The dominant material in most soil layers is an allophane.  Minerals in the sand fraction were dominated by labradorite and augite, with some layers were hypersthene and green hornblende

Evolution Magmatism of Nagasari Volcano Dieng, Central Java, Indonesia

Nagasari Volcano, part of the Dieng volcanic complex, is one of the unique volcanoes in Central Java. Around this volcano grow eruption craters, volcanic cones, and pyroclastic flow ridges. There were several 14 eruption centers around Mount Nagasari, so it is necessary to know the development of magmatism evolution. The aims of the research to determine the evolutionary development of magmatism. The methodology used is geological mapping and petrographic analysis. The observations of rocks found in the study area include andesite lava, lapilli-tuff, fallen pyroclastic breccias, and flow pyroclastic breccias. Meanwhile, geological mapping and petrographic observations of volcanic rock samples show that the evolution of magmatism in the study area from the oldest to the youngest is basaltic magma that formed Prau Volcano in the pre-caldera period. On the other hand, magmatism in the post-caldera I period was of the type of pyroxene andesite forming the Gembol to Jimat Volcano group. In contrast, in the post-caldera II period, the hornblende-biotite andesite group formed the Dieng Kulon to Kendil group

Magmatism and Geothermal Potential in Pandan Volcano East Java Indonesia

Pandan volcano is a volcano formed on Tertiary sedimentary rocks from the Kendeng zone deposited in the basin of East Java. In addition to generating petroleum potentials, such as Cepu and Bojonegoro oil fields, this area also generates geothermal potential. As a source of heat from the geothermal system is igneous rock formed from the magmatism process. The type of rock formed by the process of magmatism in the Pandan geothermal system is basaltic-andesitic and hornblende andesite are medium-high K calk alkaline affinity located in the island arc. The interaction of hot rock from post magmatism process with hydrothermal fluid resulted in the manifestation of hot springs and calcite travertine in the study area. Prediction of the subsurface temperature of hot water from geothermometer silica analysis contained in Banyukuning and Jarikasinan show cristobalite Beta equilibrium (70oC) and quartz temperature (120oC). To study about magmatism and geothermal fluid using petrographic method and petrochemical analysis (X-ray fluorescence spectrometry method) to the sample of igneous rock. While to study the fluid type and geothermometer of geothermal fluid using data from previous researchers. This research study is expected to provide additional information on the field of geothermal and magmatism in this area

The Geology and Lamongan Volcanic Rocks Case Study at Ranu Pakis, Klakah, Lumajang, East Java Province, Indonesia

Lamongan volcano is one of the unique volcanoes in the Sunda Volcano. This volcano has side eruption centers or on the slopes of the volcano. The morphology of parasitic eruptions in this volcanoes complex includes maars and boccas. There are about 64 parasitic eruption centers consisting of 37 volcanic cones (bocca) and 27 ranu (maar). The purpose of this research is to study the characteristics of lithology and petrogenesis of this volcano complex, especially in Ranu Pakis and surrounding areas. The analytical method used is to do geological mapping and petrographic analysis. The lithology found in this research area consists of magmatic and phreatomagmatic eruption deposits. Genetically this lithology includes pyroclastic flow, pyroclastic fall (scoria fall and phreatomagmatic scoria fall/accretionary lapili), tuff (phreatic) and basaltic lava. In some pyroclastic deposits, especially in maar there are fragments of accretionary lapilli, while in bocca there are basaltic lavas. Other fragments present in pyroclastic deposits are basalt scoria blocks and bombs embedded in the groundmass of volcanic ash. The results of petrographic analysis indicate that the volcanic rocks in the study area are calc alkaline affinity consisting of pyroxene andesite, basalt and pyroxene basalt lava. The pyroxene basalt lava is composed by plagioclase, clinopyroxene and little olivine embedded in the volcanic glass. Lavas are structured scoria and textured porphyritic, intersertal, trachytic, aphyric and pilotaxitic. Trachytic texture is found in the basalt fragments of pyroxene from the pyroclastic fall deposits in Ranu Pakis and Ranu Wurung. While pyroxene andesite lavas composed by plagioclase, clinopyroxene embedded in the volcanic glass. Lavas are structured scoria and textured porphyritic, intergranular, pilotaxitic and aphyric