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1. Recognition of group patterns in geological maps by building similarity networks

Author:
A. Sayidov; R. Weibel; S. Leyk
Source:
Geocarto international 2022 v.37 no.2 pp. 607-626
ISSN:
1752-0762
Subject:
rocks,   etc   ; cartography; group process;     Show all 3 Subjects
Abstract:
... The recognition of structures is fundamental to map generalization, furnishing structural information that assists in choosing and parameterizing generalization operators. We specifically focus on the process of recognizing groups of small polygons in geological maps as a prerequisite to subsequent aggregation or typification operators. Proximity between polygons represents an essential criterion ...
DOI:
10.1080/10106049.2020.1730449

2. Identification and exploration of fault-dissolved bodies in the Maokou Formation, Jiulong Mountain area, Sichuan Basin

Author:
Yanguo Qiao; Rui Li; Wei Luo; Hu Zhao; Dangui Zhang
Source:
Environmental earth sciences 2022 v.81 no.2 pp. 53
ISSN:
1866-6280
Subject:
carbonate rocks,   etc   ; basins; geophysics; China;     Show all 4 Subjects
Abstract:
... To clarify the main factors that control deep carbonate rock gas reservoirs in the Jiulong Mountain area, China, reservoir fractures and caves were investigated. This study revealed, for the first time, that fault-dissolved body traps have formed in the Maokou Formation, Sichuan Basin, and that the identification of fault-dissolved bodies is key in the exploration process. In this study, high-prec ...
DOI:
10.1007/s12665-022-10182-6

3. Telling impressions: Breuil's 1929 visit to rock art and Stone Age sites near Kimberley, South Africa

Author:
David Morris
Source:
Quaternary international 2022 v.614 pp. 164-174
ISSN:
1040-6182
Subject:
rocks,   etc   ; Africans; arts; fields; history; South Africa;     Show all 6 Subjects
Abstract:
... Stone Age and rock art sites that Breuil would visit near Kimberley, South Africa, during and after the 1929 conference of the British and South African Associations for the Advancement of Science, were amongst the first he would see in Africa. Breuil's published observations and an autobiographical account afford a keyhole view on his initial thoughts with hints of ways these would develop, along ...
DOI:
10.1016/j.quaint.2021.06.020

4. Mass balance of complementary metasomatic processes using isocon analysis

Author:
Evgeniy N. Kozlov; Ekaterina N. Fomina
Source:
MethodsX 2022 v.9 pp. 101609
ISSN:
2215-0161
Subject:
rocks,   etc   ; fluids; material forms; mathematical models; monitoring;     Show all 5 Subjects
Abstract:
... This study develops a method to estimate the redistribution of elements during several associated metasomatic processes simultaneously involved in the formation of a geological complex. The method is based on classical mass balancing using isocon analysis. The proposed approach is applicable if geological prerequisites indicate that (a) the metasomatic rocks inherited some components (x, y, etc.) ...
DOI:
10.1016/j.mex.2021.101609

5. Age, duration, and geochemical signatures of paleo-exposure events in Cenomanian–Santonian sequences (Sarvak and Ilam formations) in SW Iran: Insights from carbon and strontium isotopes chemostratigraphy

Author:
Hamzeh Mehrabi; Amin Navidtalab; Amirhossein Enayati; Borhan Bagherpour
Source:
Sedimentary geology 2022 v.434 pp. 106136
ISSN:
0037-0738
Subject:
carbonate rocks,   etc   ; carbon; evolution; oxygen; stratigraphy; strontium; Iran;     Show all 7 Subjects
Abstract:
... This study addresses the timing implications of chemical stratigraphy and chronostratigraphic correlation of unconformity-related shallow water (neritic) carbonate rock units. Cenomanian–Santonian sequences (i.e., Sarvak and Ilam formations) host considerable volumes of hydrocarbon in the Zagros region of SW Iran, which represent good examples of unconformity-related reservoirs worldwide. Geochemi ...
DOI:
10.1016/j.sedgeo.2022.106136

6. Graphical charts for onsite Continuous Slope Mass Rating (CoSMR) classification using strike parallelism and joint dip or plunge of intersection

Author:
Raj Kiran Dhiman; Mahesh Thakur
Source:
Engineering geology 2022 v.298 pp. 106559
ISSN:
0013-7952
Subject:
rocks,   etc   ; area; engineering; engineers; fields; geometry; mountains; Himalayan region;     Show all 8 Subjects
Abstract:
... We propose the new continuous slope mass rating (SMR) charts for easy calculation of SMR class of rock slopes in the field. SMR class can be determined by plotting the parallelism between dip directions of slope and discontinuity (slope dip direction and trend direction of intersection line in case of wedge failure) (A) in the x-axis and discontinuity dip amount (βⱼ) (plunge amount in case of wedg ...
DOI:
10.1016/j.enggeo.2022.106559

7. Karst Brackish Springs of Albania

Author:
Romeo Eftimi; Mario Parise; Isabella Serena Liso
Source:
Hydrology 2022 v.9 no.7 pp. -
ISSN:
2306-5338
Subject:
carbonate rocks,   etc   ; air temperature; carbonates; groundwater; gypsum; karsts; Albania;     Show all 7 Subjects
Abstract:
... The territory of Albania presents wide outcrops of soluble rocks, with typical karst landforms and the presence of remarkable carbonate aquifers. Many karst areas are located near the coasts, which results in a variety of environmental problems, mostly related to marine intrusion. This paper focuses on the brackish springs of Albania, which exhibit temperatures approximately equal to the yearly ai ...
DOI:
10.3390/hydrology9070127

8. Marine macroalgal flora on the Aegean and the Levantine coasts of Turkey

Author:
Ergün Taşkın; Murat Çakır
Source:
Botanica marina 2022 v.65 no.4 pp. 231-241
ISSN:
1437-4323
Subject:
volcanic rocks,   etc   ; Rhodophyta; flora; macroalgae; Aegean Sea; Mediterranean Sea;     Show all 6 Subjects
Abstract:
... This study contains an updated checklist and new collections of marine algae from the coasts of the Aegean Sea and the Levantine Sea of Turkey. A total of 573 marine algal taxa at specific and infraspecific levels (137 brown algae, 318 red algae, and 118 green algae) are reported, 32 of which are regarded as endangered or threatened macroalgae (four green algae, nine red algae, and 19 brown algae) ...
DOI:
10.1515/bot-2021-0095

9. 3D Rock Structure Digital Characterization Using Airborne LiDAR and Unmanned Aerial Vehicle Techniques for Stability Analysis of a Blocky Rock Mass Slope

Author:
Qiang Xu; Zhen Ye; Qian Liu; Xiujun Dong; Weile Li; Shanao Fang; Chen Guo
Source:
Remote Sensing 2022 v.14 no.13 pp. -
ISSN:
2072-4292
Subject:
carbonate rocks,   etc   ; computer software; direct contact; geometry; landscapes; lidar;     Show all 6 Subjects
Abstract:
... Airborne light detection and ranging (LiDAR) and unmanned aerial vehicle-structure from motion (UAV-SfM) provide point clouds with unprecedented resolution and accuracy that are well suited for the digital characterization of rock outcrops where direct contact measurements cannot be obtained due to terrain or safety constraints. Today, however, how to better apply these techniques to the practice ...
DOI:
10.3390/rs14133044

10. Excavation compensation method and key technology for surrounding rock control

Author:
Manchao He; Qi Wang
Source:
Engineering geology 2022 v.307 pp. 106784
ISSN:
0013-7952
Subject:
rocks,   etc   ; Poisson distribution; control methods; deformation; engineering; engineers; mass; materials;     Show all 8 Subjects
Abstract:
... The change in the stress state of the underground rock caused by excavation is the root cause of the deformation instability. Compensating for the stress change is one of the keys to effectively control the instantaneous deformation of rockbursts and the slow deformation of soft rocks in deep underground engineering. At present, the Platts pressure arch theory and the New Austrian Tunneling Method ...
DOI:
10.1016/j.enggeo.2022.106784

11. The Permeability of Porous Volcanic Rock Through the Brittle‐Ductile Transition

Author:
Michael J. Heap; Gabriel G. Meyer; Corentin Noël; Fabian B. Wadsworth; Patrick Baud; Marie E. S. Violay
Source:
Journal of geophysical research 2022 v.127 no.6 pp. e2022JB024600
ISSN:
2169-9313
Subject:
volcanic rocks,   etc   ; brittleness; deformation; geometry; geophysics; microstructure; permeability; porosity; research;     Show all 9 Subjects
Abstract:
... The permeability of volcanic rock controls the distribution of pore fluids and pore fluid pressure within a volcanic edifice, and is therefore considered to influence eruptive style and volcano deformation. We measured the porosity and permeability of a porous volcanic rock during deformation in the brittle and ductile regimes. In the brittle regime, permeability decreases by a factor of 2–6 up to ...
DOI:
10.1029/2022JB024600

12. Modified block shape characterization method for classification of fractured rock: A python-based GUI tool

Author:
Jaspreet Singh; Sarada Prasad Pradhan; Mahendra Singh; Bingxiang Yuan
Source:
Computers & geosciences 2022 v.164 pp. 105125
ISSN:
0098-3004
Subject:
rocks,   etc   ; case studies; computers; engineering; engineers; exhibitions; imports; mass; shape;     Show all 9 Subjects
Abstract:
... The presence of discontinuities in fractured rocks contributes to the formation of blocks. Characterizing the size and shape of the congregation of blocks in the rock mass provides a comprehensive understanding for studying its engineering properties. The existing block shape characterization method (BSCM) considers two factors: α describes the shortening of the minor principal axis of the block, ...
DOI:
10.1016/j.cageo.2022.105125

13. Dynamic analysis of bottom hole pressure of a horizontal well in fracture-cavity reservoirs

Author:
Liu Hailong
Source:
Environmental earth sciences 2022 v.81 no.10 pp. 295
ISSN:
1866-6280
Subject:
carbonate rocks,   etc   ; diffusivity; equations; geometry; horizontal wells; karsts; mathematical models; seepage;     Show all 8 Subjects
Abstract:
... This paper presents a new method to obtain a semi-analytical solution for bottom hole pressure (BHP) of a horizontal well in fracture-cavity reservoirs. The basic building block of the method is to build a new source function suitable for the seepage of carbonate rock for the first time and obtain BHP step by step. This paper uses Laplace transform and Perturbation method to solve the diffusivity ...
DOI:
10.1007/s12665-022-10396-8

14. Pore-scale processes in tertiary low salinity waterflooding in a carbonate rock: Micro-dispersions, water film growth, and wettability change

Author:
Ahmed M. Selem; Nicolas Agenet; Martin J. Blunt; Branko Bijeljic
Source:
Journal of colloid and interface science 2022 v.628 pp. 486-498
ISSN:
0021-9797
Subject:
carbonate rocks,   etc   ; X-radiation; contact angle; oils; petroleum; salinity; temperature; wettability;     Show all 8 Subjects
Abstract:
... The wettability change from oil-wet towards more water-wet conditions by injecting diluted brine can improve oil recovery from reservoir rocks, known as low salinity waterflooding. We investigated the underlying pore-scale mechanisms of this process to determine if improved recovery was associated with a change in local contact angle, and if additional displacement was facilitated by the formation ...
DOI:
10.1016/j.jcis.2022.06.063

15. Efficient nitrate removal of immobilized mixed aerobic denitrifying bacteria and community dynamics response to temperature and low carbon/nitrogen polluted water

Author:
Zhaoying Chen; Tianna Zhang; Jiajing Meng; Shilei Zhou; Ziwei Zhang; Zhe Chen; Yilin Liu; Jiafeng Zhang; Jiansheng Cui
Source:
Bioresource technology 2022 v.362 pp. 127873
ISSN:
0960-8524
Subject:
volcanic rocks,   etc   ; carbon; denitrification; nitrates; nitrogen; polyesters; technology; temperature; total nitrogen;     Show all 9 Subjects
Abstract:
... The denitrification performance of immobilized mixed aerobic denitrifying bacteria (IMADB) was investigated. IMADB displayed strong temperature adaptability under low Carbon/Nitrogen conditions. At 5, 15, and 25 °C, the nitrate removal efficiencies of volcanic rock and polyester fiber sponge immobilized system reached 83.95%-98.25% and 89.71%-98.14%, respectively. The nitrate content removed by th ...
DOI:
10.1016/j.biortech.2022.127873

16. In situ Fenton remediation for diesel contaminated clayey zone assisted by thermal plasma blasting: Synergism and cost estimation

Author:
Kien Tiek Wong; Seok Byum Jang; Choe Earn Choong; Cha-won Kang; Geun Chun Lee; Jae Yong Song; Yeomin Yoon; Min Jang
Source:
Chemosphere 2022 v.286 pp. 131574
ISSN:
0045-6535
Subject:
rocks,   etc   ; Koreans; cracking; polluted soils; remediation; silty soils; surfaces; synergism; technology;     Show all 9 Subjects
Abstract:
... Thermal plasma blasting technology has been widely applied for rock cracking. Though, the application for environmental remediation has yet to be reported. Since the delivery of remediation agents into diesel contaminated clayey zones are exceptionally challenging, herein, this study explores the effect of pilot-scale thermal plasma blasting for soil fracturing and concurrently dispersing the Fent ...
DOI:
10.1016/j.chemosphere.2021.131574

17. Extracting acoustic emission features that precede hard rock instability with unsupervised learning

Author:
Guoshao Su; Jinghua Huang; Huajie Xu; Yuanzhuo Qin
Source:
Engineering geology 2022 v.306 pp. 106761
ISSN:
0013-7952
Subject:
rocks,   etc   ; acoustics; artificial intelligence; energy; engineering; engineers; extracts; methodology; prediction; wills;     Show all 10 Subjects
Abstract:
... The static and dynamic failure processes of hard rocks were simulated by compression tests to investigate the precursors of hard rock instability. In the tests, acoustic emission (AE) signals were acquired, and their clustering features were automatically extracted by the clustering unsupervised learning method. The results showed that a class of AE signals featured ‘high rise time, high ring coun ...
DOI:
10.1016/j.enggeo.2022.106761

18. The Effects of Different Geological Conditions on Landslide-Triggering Rainfall Conditions in South Korea

Author:
Jae-Uk Lee; Yong-Chan Cho; Minseok Kim; Su-Jin Jang; Jongmyoung Lee; Sukwoo Kim
Source:
Water 2022 v.14 no.13 pp. -
ISSN:
2073-4441
Subject:
sedimentary rocks,   etc   ; gneiss; granite; landslides; probability; rain; regression analysis; water; South Korea;     Show all 9 Subjects
Abstract:
... How landslide-triggering rainfall conditions vary with geology is unclear. The effects of three different geological conditions (gneiss, GN; granite, GR; sedimentary rock, SR) on variations in intensity–duration (I-D) conditions and rainfall characteristics responsible for initiating shallow landslides were examined using data from 476 landslides in South Korea from 1963 to 2018 and detailed stati ...
DOI:
10.3390/w14132051

19. Multiscale mineralogical investigations for mineral potentiality mapping of Ras El-kharit-Wadi Khashir district (Eastern Desert, Egypt)

Author:
Hatem M. El-Desoky; Ali Shebl; Ahmed M. Abdel-Rahman; Wael Fahmy; Hamada El-Awny; Anas M. El-Sherif; Mahmoud M. El-Rahmany; Árpád Csámer
Source:
The Egyptian Journal of Remote Sensing and Space Sciences (Online) 2022 pp. -
ISSN:
1110-9823
Subject:
metamorphic rocks,   etc   ; absorption; data collection; goethite; magnetite; microscopy; mineralization; pyrite; surveys; Egypt;     Show all 10 Subjects
Abstract:
... Through various scales of observation, ranging from remote sensing data, field investigations, hand specimens, microscopic petrographic examinations, XRD, to SEM, indicators of various mineralization types are highlighted in Ras El-kharit-wadi Khashir (Eastern Desert, Egypt). Systematic remote sensing exploration of the mineralized zones is performed through integrating Sentinel 2 and ASTER datase ...
DOI:
10.1016/j.ejrs.2022.09.001

20. Evaluating the joint use of GPR and ERT on mapping shallow subsurface features of karst critical zone in southwest China

Author:
Min Tao; Xi Chen; Qinbo Cheng; Andrew Binley
Source:
Vadose zone journal 2022 v.21 no.1 pp. e20172
ISSN:
1539-1663
Subject:
carbonate rocks,   etc   ; aquifers; bedrock; electrical resistance; geophysics; karsts; landscapes; tomography; vadose zone; China;     Show all 10 Subjects
Abstract:
... The soils and underlying weathered carbonate rock in karstic regions play an important role in the infiltration, storage, and retention of water and nutrients. Because of significant heterogeneity of the karst, the use of individual geophysical techniques is often not sufficient for unambiguous assessment of the irregular distributions of soils and underlying fractures. In this study, ground penet ...
DOI:
10.1002/vzj2.20172