Diagenesis of Miocene pelitic sedimentary rocks in the Sava Depression (Croatia)

Clay Minerals ◽  
2011 ◽  
Vol 46 (1) ◽  
pp. 59-72 ◽  
Author(s):  
A. Grizelj ◽  
D. Tibljaš ◽  
M. Kovačić ◽  
D. Španić
Keyword(s):  
Elevated Temperatures ◽  
Pannonian Basin ◽  
Early Stage ◽  
Vitrinite Reflectance ◽  
Sedimentary Rocks ◽  
Depositional Environments ◽  
Diagenetic Processes ◽  
Alteration Processes ◽  
Three Stages ◽  
Basin System

AbstractMiocene pelitic sedimentary rocks from six wells in the Sava Depression (sub-basin in the south-western part of the Pannonian Basin System) were investigated in order to determine the degrees of diagenetic alteration.Qualitative and semiquantitative mineral compositions of samples and the content of smectite in illite-smectite (I-S) were determined by X-ray powder diffraction (XRD).Vitrinite reflectance and thermal alteration index (TAI) were measured in order to estimate the palaeotemperatures.Carbonate minerals, clay minerals and quartz are the main constituents of the pelitic sediments.Feldspars (albite), pyrite, opal-CT and hematite are present as minor constituents in some rocks. The mineral composition of the rocks, apart from previously known differences caused by various depositional environments and clastic material provenance, is dependent on the degree of diagenetic processes. At elevated temperatures and large burial depths the minerals formed by alteration processes or precipitated at the surface; smectite, kaolinite and calcite were gradually replaced by minerals formed by diagenetic processes, i.e. by illite-smectite, illite, chlorite, Ca-excess dolomite/ankerite and albite. Based on XRD data for smectite, I-S and illite, three stages of diagenetic development have been established. The early stage was characteristic of samples at depths <1.8 km containing smectite, I-S of the random R0 type and detrital illite.The middle stage begins with the appearance of the ordered R1 type of I-S at the depths >1.8 km and temperature above 80°C. At depths >4.6 km with corresponding temperatures >190ºC, the late stage began, characterized by the presence of R>1 I-S with <10% smectite.

scholarly journals Regional turbidites and turbiditic environments developed during Neogene and Quaternary in Croatia

2016 ◽  
Vol 63 (1) ◽  
pp. 39-54 ◽  
Author(s):  
Tomislav Malvić
Keyword(s):  
Late Miocene ◽  
Adriatic Sea ◽  
Pannonian Basin ◽  
Depositional Environments ◽  
Total Thickness ◽  
Northern Adriatic Sea ◽  
Northern Adriatic ◽  
Clastic Sediments ◽  
Northern Croatia ◽  
Basin System

AbstractThe Croatian Neogene and Quaternary depositional sequences preserve a record of several different depositional environments with turbidite successions. These are turbiditic systems developed during the Late Miocene in the Croatian part of the Pannonian Basin System and during the Pliocene and Pleistocene in the northern Adriatic Sea. The shape, salinity and depths of depositional areas were significantly different in these two depressional areas, but both were fed mostly with Alpine detritus. Neogene turbidites with lacustrine pelitic sedimentation formed thick heterogeneous sequences of sandstones and marls (totalling several hundreds to some thousands of metres in thickness in different depressional parts) of Upper Miocene age in Northern Croatia. By contrast, Pliocene and especially Pleistocene turbidites of the northern Adriatic were deposited in a marine environment where the total thickness of sand and clay sequences can reach up to several thousand metres. In both cases, individual sandy or sandstone turbiditic sequences (events) can reach several tens of metres in thickness. These turbidite clastic sediments are important hydrocarbon reservoirs.

U–Pb ages and tectonic significance of late Archean alkalic magmatism and nonmarine sedimentation: Timiskaming Group, southern Abitibi belt, Ontario

1991 ◽  
Vol 28 (4) ◽  
pp. 489-503 ◽  
Author(s):  
F. Corfu ◽  
S. L. Jackson ◽  
R. H. Sutcliffe
Keyword(s):  
Greenstone Belt ◽  
Early Stage ◽  
Sedimentary Rocks ◽  
Detrital Zircons ◽  
Geochemical Data ◽  
Lake Area ◽  
Quartz Porphyry ◽  
Bear Lake ◽  
Lake Formation ◽  
Dominant Period

The paper presents U–Pb ages for zircons of the calc-alkalic to alkalic igneous suite and associated alluvial–fluvial sedimentary rocks of the Timiskaming Group in the late Archean Abitibi greenstone belt, Superior Province. The Timiskaming Group rests unconformably on pre-2700 Ma komatiitic to calc-alkalic volcanic sequences and is the expression of the latest stages of magmatism and tectonism that shaped the greenstone belt. An age of 2685 ± 3 Ma for the Bidgood quartz porphyry, an age of about 2685–2682 Ma for a quartz–feldspar porphyry clast in a conglomerate, and ages ranging from 2686 to 2680 Ma for detrital zircons in sandstones appear to reflect an early stage in the development of the Timiskaming Group. The youngest detrital zircons in each of three sandstones at Timmins, Kirkland Lake, and south of Larder Lake define maximum ages of sedimentation at about 2679 Ma; the latter sandstone is cut by a porphyry dyke dated by titanite at [Formula: see text], identical to the 2677 ± 2 Ma age for a volcanic agglomerate of the Bear Lake Formation north of Larder Lake. Similar ages have previously been reported for syenitic to granitic plutons of the region. The dominant period of Timiskaming sedimentation and magmatism was thus 2680–2677 Ma. Xenocrystic zircons found in a porphyry and a lamprophyre dyke have ages of 2750–2720 Ma, which correspond to the ages of the oldest units in the belt, predating the volumetrically dominant ca. 2700 Ma greenstone sequences. The presence of these xenocrysts and the onlapping of the Timiskaming Group on all earlier lithotectonic units of the southern Abitibi belt support the concept that the 2700 Ma ensimatic sequences were thrust onto older assemblages during a phase of compression that culminated with the generation of tonalite and granodiorite at about 2695–2688 Ma. Published geochemical data for the Timiskaming igneous suite, notably the enrichments in large-ion lithophile elements and light rare-earth elements and the relative depletion of Nb, Ta, and Ti compare with the characteristics of suites at modern convergent settings such as the Eolian and the Banda arcs and are consistent with generation of the melts from deep metasomatized mantle in the final stages of, or after cessation of, subduction. Late- and post-Timiskaming compression caused north-directed thrusting and folding. Turbiditic sedimentary units of the Larder Lake area which locally structurally overly the alluvial–fluvial sequence and were earlier thought to be part of the Timiskaming Group, appear to be older "flyschoid" sequences, possibly correlative with sedimentary rocks deposited in the Porcupine syncline at Timmins between 2700 and 2690 Ma.

Mechanics of basin inversion: Finite element modelling of the Pannonian Basin System

2011 ◽  
Vol 502 (1-2) ◽  
pp. 121-145 ◽  
Author(s):  
M. Jarosinski ◽  
F. Beekman ◽  
L. Matenco ◽  
S. Cloetingh
Keyword(s):  
Finite Element ◽  
Finite Element Modelling ◽  
Pannonian Basin ◽  
Element Modelling ◽  
Basin Inversion ◽  
Basin System

scholarly journals Composition and provenance of Neogene sedimentary rocks of Dilj gora Mt. (south Pannonian Basin, Croatia)

2011 ◽  
Vol 64 (2) ◽  
pp. 121-132 ◽  
Author(s):  
Marijan Kovačić ◽  
Marija Horvat ◽  
Mato Pikija ◽  
Damir Slovenec
Keyword(s):  
Pannonian Basin ◽  
Sedimentary Rocks

scholarly journals Pelatihan Strategi Penulisan Artikel Ilmiah pada Jurnal Bereputasi Nasional dan Internasional bagi Guru di SMKN 1 Sekotong Kabupaten Lombok Barat

2020 ◽  
Vol 1 (2) ◽  
pp. 139
Author(s):  
Taufik Suadiyatno ◽  
Dedi Sumarsono ◽  
Muliani Muliani ◽  
Moh. Arsyad Arrafii ◽  
Abdul Kadir Bagis
Keyword(s):  
Community Service ◽  
Early Stage ◽  
Scientific Article ◽  
Service Program ◽  
Evaluation Stage ◽  
Three Stages ◽  
Implementation Stage ◽  
Program Team

This community service program aimed to improve teachers’ anthusiastic in SMKN 1 Sekotong, West Lombok to conduct articles to be published in national accredited and international journal. The method used in this program divided into three stages such as 1) early stage includes koordination between the program team with the principle of SMKN 1 Sekotong; 2) implementation stage includes scientific article training; and 3) evaluation stage that used as the overview of the next program. The materials in this program was presented mostly in term of describing the technique of writing good articles therefore they deserve to be published in national accredited or international journal. This community service program was conducted in SMKN 1 Sekotong which was followed by the pcinciple and 23 teachers. The conclusion of this program was there was an improvement of teachers’ anthusiastic to publish their scientific articles in national accredited and international journal.

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