CORRELATIONS OF ISOTOPE AND HYDROCHEMICAL PARAMETERS OF MUD VOLCANOES: FACTS AND HYPOTHESES

On June 7, 2018, a sub-mesoscale anticyclonic eddy induced by the wind (north-east) was registered on the shelf in the area of the city of Gelendzhik. With the help of field multidisciplinary expedition ship surveys, it was shown that this eddy exists in the layer above the seasonal thermocline. At the periphery of the eddy weak variability of hydrochemical parameters and quantitative indicators of phytoplankton were recorded. The result of the formation of such eddy structure was a shift in the structure of phytoplankton – the annual observed coccolithophores bloom was not registered.

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The Grobogan Mud Volcano Complex: An Identification to Reveal the Opportunity of Hydrocarbon Exploration

Proc. Indon. Petrol. Assoc., Digital Technical Conference, 2020 ◽

10.29118/ipa20-sg-362 ◽

2020 ◽

Author(s):

C. Jatu

Keyword(s):

Water Analysis ◽

Middle Eocene ◽

Research Result ◽

Hydrocarbon Exploration ◽

System Model ◽

Mud Volcano ◽

Hydrocarbon Potential ◽

Mud Volcanoes ◽

Central Java ◽

Surface Data

Mud volcanoes in Grobogan are referred as the Grobogan Mud Volcanoes Complex in Central Java where there is evidence of oil seepages. This comprehensive research is to determine the characteristics and hydrocarbon potential of the mud volcanoes in the Central Java region as a new opportunity for hydrocarbon exploration. The Grobogan Mud Volcano Complex consists of eight mud volcanoes that have its characteristics based on the study used the geological surface data and seismic literature as supporting data on eight mud volcanoes. The determination of geological surface characteristics is based on geomorphological analysis, laboratory analysis such as petrography, natural gas geochemistry, water analysis, mud geochemical analysis and biostratigraphy. Surface data and subsurface data are correlated, interpreted, and validated to make mud volcano system model. The purpose of making the mud volcanoes system model is to identify the hydrocarbon potential in Grobogan. This research proved that each of the Grobogan Mud Volcanoes has different morphological forms. Grobogan Mud Volcanoes materials are including muds, rock fragments, gas, and water content with different elemental values. Based on this research result, there are four mud volcano systems models in Central Java, they are Bledug Kuwu, Maesan, Cungkrik, and Crewek type. The source of the mud is from Ngimbang and Tawun Formation (Middle Eocene to Early Miocene) from biostratigraphy data and it been correlated with seismic data. Grobogan Mud Volcanoes have potential hydrocarbons with type III kerogen of organic matter (gas) and immature to early mature level based on TOC vs HI cross plot. The main product are thermogenic gas and some oil in relatively small quantities. Water analysis shows that it has mature sodium chloride water. This analysis also shows the location was formed within formations that are deposited in a marine environment with high salinity. Research of mud volcanos is rarely done in general. However, this comprehensive research shows the mud volcano has promising hydrocarbon potential and is a new perspective on hydrocarbon exploration.

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Hydrological and hydrochemical research of the mouths of the small rivers flowing to the White sea in the winter low water season of 2019

Океанология ◽

10.31857/s0030-15745961089-1092 ◽

2019 ◽

Vol 59 (6) ◽

pp. 1089-1092

Author(s):

I. V. Miskevich ◽

A. V. Leshchev ◽

D. S. Moseev ◽

A. S. Lokhov

Keyword(s):

White Sea ◽

Small Rivers ◽

The White Sea ◽

Hydrochemical Parameters ◽

Catchment Basin ◽

Onega Bay ◽

Short Period ◽

Tidal Estuaries ◽

Hydrochemical Studies ◽

River Mouths

In the winter low water season in March and the first week of April 2019, complex hydrological and hydrochemical studies were carried out at the mouths of two small rivers of the White Sea catchment basin (the Mudyuga river, which flows into the Dvina Bay, and the Tamitsa river, which flows into the Onega Bay). The results indicate significant differences in the short-period variability of hydrological and hydrochemical parameters in the winter in the studied river mouths compared with the characteristics observed in the tidal estuaries of large and medium rivers, as well as in the mouths of small rivers of the southern seas.

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GLOBAL WARMING IMPACT ON URMIA LAKE VULNERABILITY AND HAZARD

Proceedings of International Conference "Managinag risks to coastal regions and communities in a changinag world" (EMECS'11 - SeaCoasts XXVI) ◽

10.21610/conferencearticle_58b4316abcdb3 ◽

2017 ◽

Author(s):

Homayoun Khoshravan ◽

Homayoun Khoshravan

Keyword(s):

Global Warming ◽

Salt Marshes ◽

Satellite Images ◽

Field Research ◽

Urmia Lake ◽

Mud Volcanoes ◽

Seismic Profiles ◽

Global Warming Impact ◽

Morphological Behavior ◽

Different Parts

The main goal of the research is to analyze the global warming impact on Urmia lake vulnerabiliy and hazard. By the study of topographic maps, satellite images and field research, the various types of coasts were identified: mud flats, salt marshes, sandy or cliffed coasts, and islands. Moreover the interpretation of seismic profiles, has led to recognize so important morphological features in the lake bed, such as: erosive channels, colos, mud volcanoes, the raised sandy masses and under water mounts. The main results illustrate the variable morphological behavior of Urmia Lake in different parts of the lake.

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Biogeochemistry of surface sediments in mud volcanoes of the Gulf of Cádiz

Geo-Marine Letters ◽

10.1007/s00367-021-00696-6 ◽

2021 ◽

Vol 41 (3) ◽

Author(s):

Dolores Jiménez-López ◽

Ana Sierra ◽

Teodora Ortega ◽

Sandra Manzano-Medina ◽

M. Carmen Fernández-Puga ◽

...

Keyword(s):

Surface Sediments ◽

Mud Volcanoes ◽

Gulf Of Cadiz ◽

Gulf Of Cádiz

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Hydrochemistry and environmental isotopes (18O, 2H, 3H, 3He/4He) of groundwater and floodwater in the great area of Hurghada, Eastern Desert of Egypt

Environmental Earth Sciences ◽

10.1007/s12665-021-09487-9 ◽

2021 ◽

Vol 80 (11) ◽

Author(s):

M. Wannous ◽

C. Jahnke ◽

U. Troeger ◽

M. Falk ◽

F. Bauer

Keyword(s):

Environmental Isotopes ◽

Eastern Desert ◽

Hydrochemical Parameters ◽

Deep Wells ◽

Fractured Aquifers ◽

He Isotopes ◽

Shallow Wells ◽

The Common ◽

Faulted Zone

AbstractPorous and fractured aquifers exist in the area of Hurghada, Eastern Desert of Egypt, whose recharge processes through the common flash floods are not identified. Hydrochemical parameters, stable isotopes 18O, 2H and tritium in floodwater and groundwater were applied in the area subject to study. Additionally, He isotopes were investigated in the deep wells in the faulted zone at the Abu Shaar Plateau. 3H activity in all sampled points lies below the detection limit excluding a recent recharge component in groundwater. However, the hydrochemical ratios and the stable isotope signature confirm that the shallow wells and springs (Red Sea Hills group) are being recharged from modern precipitation. The hydrochemical parameters of the deep wells at the Abu Shaar Plateau (coastal plain group) confirm another origin for the ions rather than the modern precipitation. Together with the 18O and 2H values, the Br/Cl ratio of this group confirms the absence of seawater intrusion component and the role of the fault as a hydraulic barrier. These 18O and 2H values deviate from the GMWL confirming an evaporation effect and colder infiltration conditions and reveal strongly a possible mixing with the Nubian Sandstone in the region. The 3He/4He ratio confirms a mantle contribution of 2% from the total He components.

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