b'AEGC 2023Short abstractsAEGC 2023: Short abstracts *Towards a regional understanding of Sherbrookwhole becoming a global village and yet making distance Supersequence gross depositional environments,impossibilities becoming visual realities just like translating offshore Otway Basin. fictional stories into real realities through space data applications, unfortunately the African cultures, traditions Steve Abbott, Chris Cubitt, George Bernardel, Duy Nguyen andand religious beliefs are having extraordinary influences Chris Nicholson at present that are determining the level of development of these space sciences on this continent. So this research Geoscience Australia identifies the roles of these African cultures, traditions The Sherbrook Supersequence (CampanianMaastrichtian)and religious beliefs in respect of their influences on the is the youngest of four Cretaceous supersequencesdevelopment of space sciences and technologies on the recognised in the Otway Basin, and was deposited duringcontinent in one hand and found some possible lasting a phase of crustal extension. Supersequence thickness issolution to this issues in the other.typically less than 1000 ms TWT across the inboard platform. Beyond the platform edge thickness increase is variablyGeoelectrical research activities to support accommodated by growth on extensional faults, and up to 2800 ms TWT of sediments were deposited in the Morumgroundwater investigations, Kesaben Village, Lebaksiu and Nelson sub-basins. This study aims to generate grossDistrict, Tegal Regency, Central Java.depositional environment (GDE) maps for the SherbrookAryono AdhiBudi Eka Nurcahya Nurcahya , Juhadi Juhadi , 1 2 3Supersequence by extrapolating well-based environmentalYeri Sutopo Sutopoand Edy Trihatmoko Trihatmoko4 3interpretations, via calibration with seismic facies, to the undrilled deepwater basin. Analyses of downhole-logs,1 Physics Department Faculty of Math and Science State University cores and cuttings from wells across the inboard platformof Semarang indicate that the Sherbrook Supersequence includes fluvial- 2 Physics Department Faculty of Math and Science Gadjah Mada deltaic, delta platform, delta front and prodelta GDE. InUniversity many wells, a broadly shallowing-upward trend is evident.3 Geography Department Faculty of Social Science State University The progradational nature of the Sherbrook Supersequenceof Semarang is also observed as large-scale clinoforms on the Otway4 Civil Engineering Department Faculty of Engineering Unnes State 2020 2D seismic data that was recently acquired over theUniversity of Semarangdeep-water Otway Basin. The seismically imaged clinoform succession, which is mostly younger than the SherbrookGeoelectrical estimation investigations have been carried out in succession as intersected in wells, consists of high-orderKesaben Village, Lebaksiu District, Tegal Regency, Central Java, clinoform packages that reveal the presence of a deltaicaiming to determine the presence of rock layers that function GDE in the Morum and Nelson sub-basins. Preliminaryas aquifers. The method used is the resistivity geoelectric well observations indicate that fluvial-deltaic GDEs aremethod of the Schlumberger configuration. Some of the limited to the inner platform, with increasing proportionsresistivity contrasts which are interpreted as layer changes are of a distal GDE present in outboard wells. Sherbrook GDEthen described in the subsurface section, geoelectric analysis distribution is influenced by growth on extensional faults,of Kesaben Village, Kesuben Village, Lebaksiu District, Tegal syn-depositional folding, mass-transport complexes up toRegency, Central Java Province (GL-01, GL-02, GL-03 and GL-04 ) 70 km across, and erosion (aerially extensive and locallyIn GL-01 it is estimated that there are five aquifer layers, namely deep) at the T1 (near top Cretaceous) breakup unconformity.at a depth of 4.255.51 m, 6.7218 m, 1826.6 m, 30.857.2 We present some results of this study, with emphasis onm and 57.286.2 m with an estimated aquifer layer in the form regional seismic facies supported by examples of GDEof lahar deposits dominantly sand matrix and conglomerate recognised in wells. from the Mount Slamat Lava Deposits (Qls) formation. In GL-02 it is estimated at a depth of 6.327.51 m, 7.5113 m, 1315.9 m, 28.133.3 m and 40.1 m with an estimated aquifer The position of studying space sciences in Africa:layer in the form of sediment the dominant lahar of the sand Opportunities and potentials. and conglomerate matrix of the Qls formation. At GL-03 it is estimated at a depth of 7.689.8 m, 9.818.4 m, 18.421.1 Babagana Abubakar m, 36.145.3 m and 45.378.8 m with an estimated aquifer Seabed International layer in the form of lahar deposits dominantly sand matrix and conglomerate from the Qls formation. At GL-04 it is estimated at Despite the accelerating level of human development anda depth of 4.066.82 m, 6.8213.3 m, 13.315.4 m, 31.739.7 achievements in the field of science and technology inm and 39.776.4 m with an estimated aquifer layer in the form this modern time, which keeps making human lives muchof lahar deposits dominantly sand matrix and conglomerate better and easier while transforming the entire globe as afrom the Qls formation*Presentations are listed alphabetically by first author. The name of the presenting author is shown in bold font.77 PREVIEW FEBRUARY 2023'