Recent magmatism drives hydrocarbon generation in north-east Java, Indonesia

Zaputlyaeva, Alexandra; Mazzini, Adriano; Blumenberg, Martin; Scheeder, Georg; Kürschner, Wolfram M.; J, Kuś; Jones, Morgan T.; Frieling, Joost

doi:10.1038/s41598-020-58567-6

Cited by 17 publications

(4 citation statements)

References 68 publications

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“…Numerous scientific studies from different disciplines have shown that this eruption is connected and fed at depth by the neighboring volcanic complex (Fallahi et al., 2017; Inguaggiato et al., 2018; Zaputlyaeva et al., 2019). The migration of magmatic and hydrothermal fluids into the deep organic‐rich source rock deposits of the basin, triggered thermometamorphic reactions and fluids overpressure at depth (Malvoisin et al., 2018; Mazzini et al., 2012; Svensen et al., 2018; Zaputlyaeva et al., 2020). These fluids are ultimately released at the Lusi crater with impressive geysering activity at the surface (Karyono et al., 2017; Lupi et al., 2018).…”

Section: Introductionmentioning

confidence: 99%

“…This part of the island is also characterized by numerous diapirs and seismic profiles show that some of these have undergone eruption and subsidence (Istadi et al., 2009; Miller & Mazzini, 2018; Moscariello et al., 2018). Several geochemical (Inguaggiato et al., 2018; Mazzini et al., 2012, 2018; Sciarra et al., 2018; Zaputlyaeva et al., 2019), geological (Mazzini et al., 2021; Moscariello et al., 2018; Samankassou et al., 2018; Zaputlyaeva et al., 2020), numerical (Collignon, Schmid, et al., 2018; Lupi et al., 2013, 2014; Svensen et al., 2018) and geophysical (Karyono et al., 2017; Lupi et al., 2018; Mauri, Husein, Mazzini, Irawan, et al., 2018, Mauri, Husein, Mazzini, Karyono, et al., 2018; Panzera et al., 2018; Obermann et al., 2018; Osorio Riffo et al., 2021) studies contributed to the better understanding of the subsurface structure of Lusi. However, to date a clear picture of the Lusi shallow plumbing system is still missing.…”

Section: Introductionmentioning

confidence: 99%

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3D Deep Electrical Resistivity Tomography of the Lusi Eruption Site in East Java

Mazzini

Carrier

Sciarra

et al. 2021

Geophysical Research Letters

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Electrical resistivity and magnetotelluric are potential methods often used in hydrogeophysical and geothermal studies. Electrical resistivity tomography is traditionally a shallow-reaching method unless using logistically challenging configurations often prohibitive in urbanized areas. Magnetotelluric enables prospecting much greater depths but it is normally hampering resolution of the shallower data. Both methods are hindered by the electromagnetic noise that is typical of urbanized regions. Hence, the prospection of the upper kilometer of the crust with electrical methods is not trivial. However, Deep Electrical Resistivity Tomography (DERT) has been previously attempted and few successful data acquisition experiments were conducted over the last decade. Revil et al. (2011) investigated the hydrogeology of the Stromboli volcano in Southern Italy with several 2D roll-alongs of multi-core cables with 50 m electrode spacing. Balasco et al. (2011) and Pucci et al. ( 2016) used dipole-dipole and remote electrode configuration, respectively, to attain 2D profiles ∼1,000 m deep to investigate seismogenic structures in the Italian Apennines. Experiments aiming to obtain large-scale 3D images have been attempted by Troiano et al. (2019) who provided a resistive image of the shallow hydrothermal system of the Campi Flegrei, Italy. Such type of studies became possible thanks to IRIS® instruments that released the Fullwaver system (Carrier et al., 2019;Lajaunie et al., 2019;Troiano et al., 2019) equipped with GPS-synchronised voltmeters that can be deployed to form a network even in urbanized areas. This hardware was initially conceived to investigate the chargeability and resistivity contrasts often encountered in ore deposits. However, Carrier et al. (2019) has shown that the Fullwaver technology could also be suitable to prospect middle-enthalpy geothermal environments. Moreover this versatile system can acquire large-scale 3D surveys on active geothermal structures where

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

3D Deep Electrical Resistivity Tomography of the Lusi Eruption Site in East Java

Mazzini

Carrier

Sciarra

et al. 2021

Geophysical Research Letters

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“…Berbeda dengan Zona Selatan, nilai 𝑏 untuk Zona Utara pada Gambar 4(a) hampir mendekati 1. Argumen terbaik adalah aktivitas kegempaan di wilayah utara Jawa Timur banyak dipengaruhi oleh Sesar Kendeng sebagai perpanjangan dari busur belakang Flores (Koulali et al, 2016;Koulali et al, 2017), Sesar Pasuruan (Marliyani et al, 2019) dan busur Sunda Modern yang terbentuk pada jaman kwatier yang lebih muda dari jaman tersier (Soeria-Atmadja et al, 1994;Setijadji et al, 2006;Smyth et al, 2008;van Gorsel, 2018;Cholifah et al, 2020;Zaputlyaeva et al, 2020).…”

Section: Kurva Fmdunclassified

Seismisitas Jawa Timur Dan Potensi Bahaya Bencana Seismik Terkait

Fitria

Prastowo

2022

IFI

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Abstrak Seismisitas Jawa Timur dan potensi bencana gempa tektonik terkait dapat dipelajari melalui analisis parameter seismik: -value, -value, dan anomali -value. Nilai merefleksikan level seismisitas, nilai menunjukkan level stres batuan bawah permukaan, dan anomali nilai menjadi prekursor gempa besar. Ketiga parameter tersebut secara akurat diperoleh dengan memanfaatkan data frekuensi-magnitudo (FMD) dari katalog USGS antara 1973-2020. Kurva FMD menjadi basis penerapan hukum Gutenberg-Richter melalui pendekatan maximum likelihood untuk data gempa tektonik dengan magnitudo antara 3,1 7,8 dan kedalaman mencapai 574 km di bawah permukaan. Perhitungan ketiga parameter dilakukan dengan membagi wilayah Jawa Timur menjadi Zona Utara, Zona Selatan, dan Zona Utuh dengan hasil-hasil untuk Zona Utara: = 5,77 dan = 0,96; Zona Selatan: = 6,49 dan = 0,81; dan Zona Utuh: = 6,80 dan = 0,87. Berbeda dengan nilai dan , anomali nilai tidak dinyatakan dalam bentuk angka melainkan dalam bentuk peta variasi spasio-temporal -value. Analisis hasil-hasil perhitungan dan untuk ketiga zona seismik menunjukkan bahwa seismisitas wilayah selatan Jawa Timur lebih tinggi daripada seismisitas wilayah utara karena stres tinggi batuan yang dipicu aktivitas seismo-tektonik sepanjang zona subduksi dekat Palung Jawa. Dengan demikian, wilayah selatan Jawa Timur lebih rentan terhadap potensi bencana gempa seismik. Analisis variasi spasio-temporal -value menemukan wilayah selatan Jawa Timur dengan nilai yang rendah, bertepatan dengan saat gempa besar (tsunami earthquake) terjadi pada bulan Juni 1994. Hasil-hasil penelitian ini sama dengan temuan penelitian terdahulu yang relevan dengan studi seismisitas Pulau Jawa. Kata Kunci: seismisitas Jawa Timur, -value, -value, anomali -value, hukum Gutenberg-Richter Abstract Seismicity in East Java and its potency for earthquakes can be examined using parameters: -value, -value, and -value anomaly. Parameter -value reflects seismicity level, -value indicates stress level of subsurface structure, and -value anomaly is a precursor for a large event. The parameters were accurately obtained from frequency-magnitude distribution (FMD) in the region of interest between 1973-2020 based on USGS catalogue. The FMD serves as a basis for the Gutenberg-Richter (GR) law through maximum likelihood for data with varying magnitudes of 3.1 7.8 and depths reaching 574 km below the surface. Determination of the parameters was performed by dividing East Java into Northern Zone, Southern Zone, the whole Zone. The results were for Northern Zone: = 5,77 and = 0,96; Southern Zone: = 6,49 and = 0,81; and the whole Zone: = 6,80 and = 0,87, respectively. Different from -value and -value, the anomaly in -value was not represented in numbers but it was given in the spasio-temporal -value. Analysis of the results for each zone showed that seismicity in the southern region of East Java is relatively higher than in the north, due to a high-stress region induced by tectonic activities along the subduction zone near the Java Trench. Therefore, the southern region is vulnerable to geohazards. Analysis of spasio-temporal -value found a low -value off the south coast, associated with a location of tsunami earthquake in June 1994. The current results are consistent with previous findings for Java seismicity. Keywords: East Java seismicity, -value, -value, -value anomaly, Gutenberg-Richter law

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“…Mercury speciation determines how (im)mobile Hg might be during erosion (Manceau et al., 2018) or upon heating, such as during hydrocarbon formation, production and burning (Yudovich & Ketris, 2005), but also soils subjected to intense forest fires (Biswas et al., 2007), and sediments near intrusive and eruptive volcanic activity (Chen et al., 2022; Liu et al., 2022; Svensen et al., 2023; Zaputlyaeva et al., 2020). It is difficult to gauge the importance of geological Hg fluxes from any of these potential sources without knowledge of Hg speciation in (sedimentary) rocks.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Hg Speciation Changes in the Sedimentary Rock Record From Thermal Desorption Characteristics

Frieling,

Fendley,

Nawaz

et al. 2024

Geochem Geophys Geosyst

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Sedimentary mercury (Hg) has become a widely used proxy for paleo‐volcanic activity. However, scavenging and drawdown of Hg by organic‐matter (OM) and sulfides are important non‐volcanic factors determining variability in such records. Most studies, therefore, normalize total Hg (HgT) to a Hg “host‐phase” proxy (e.g., HgT/TOC for OM, HgT/TS for sulfides), with the dominant host‐phase determined based on the strongest observed (linear) correlations. This approach suffers from various non‐linearities in Hg‐host‐phase behavior and does not account for succession‐level, let alone sample‐level, Hg speciation changes. Thermal desorption characteristics or “profiles” (TDPs) for many Hg species during pyrolysis analysis are well‐established with applications including distinguishing between OM‐bound Hg and different Hg sulfides and oxides in (sub‐)recent sediments. We explore the use of TDPs for geological sediment (rock) samples and illustrate the presence of multiple release phases (Hg species)—correlated to geochemical host‐phase—in (almost) all the 65 analyzed Tithonian (146–145 Ma) silt and mudrock samples. By quantifying the Hg in each release phase for every sample, we find TOC concentration may determine ∼60% of the variability in the first (lower temperature) Hg TDP release phase: a stark difference with the total Hg released from these samples, where ∼20% of variation is explained by TOC variability. TDPs provide insight on sample‐level Hg speciation and demonstrate that, while the common assumption of single‐phase Hg speciation in sedimentary rocks is problematic, differences in Hg speciation can be detected, quantified, and accounted for using commonly applied techniques—opening potential for routine assessment.

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Recent magmatism drives hydrocarbon generation in north-east Java, Indonesia

Cited by 17 publications

References 68 publications

3D Deep Electrical Resistivity Tomography of the Lusi Eruption Site in East Java

3D Deep Electrical Resistivity Tomography of the Lusi Eruption Site in East Java

Seismisitas Jawa Timur Dan Potensi Bahaya Bencana Seismik Terkait

Assessment of Hg Speciation Changes in the Sedimentary Rock Record From Thermal Desorption Characteristics

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