DACIAN BASIN - GeoEcoMar

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172 Chapter 7. The Point Bar Facies in the Jilţ Quarry (Romanian Deposits) The westernmost set of mud drapes (set S1 in figure 7.21) shows the lowest dipping values and a large east to west extension. Eastward, the clay drape sets are getting less extensive and the mud drapes dip increases. The shape of the mud drapes in vertical section is also variable. The western group (set S1) occurs as long, straight mud drapes, indicating that the fluvial channel was wide and the sedimentation on the accreting bank quite active. The mud drapes of the next group (set S2) are convex-up shaped, which possibly indicate the active lateral shifting of the channel. The rest of the clay beds (sets S3 to S6 in figure 7.21) are less extended, concave-up shaped and steeper (10 – 20 o ). Between the sets of inclined mud drapes there are discontinuity relationships, but they are hard to observe directly in the outcrop. The obvious relationship in outcrop is between the sets S5 and S6 (Fig. 7.22). The discordance surface is evident, and the erosion surface is emphasized by an accumulation of mud pebbles. FIGURE 7.16. The sedimentary architecture of the Jilţ Quarry sedimentary succession. A. General setting of the point bar unit. B. Geometry of the point bar facies. Not to scale
7.2. The sedimentological description of the Jilţ point bar deposits FIGURE 7.17. The coarse-grained sand fluvial deposits without inclined bedding, underlying the western part of the Jilţ point bar deposit. A and B. Large trough cross-lamination units. The thickness of the trough cross-laminated units is between 15 and 30 cm. C. Upper facies of the Jilţ point bar (C1) overlying the coarse-grained fluvial sand (C2), heavily disturbed by water expulsion 173
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Dan C. Jipa, Cornel Olariu DACIAN B
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Dedicated to the memory of Prof. Gh
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NATIONAL INSTITUTE OF MARINE GEOLOG
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CONTENTS Foreword and Acknowledgeme
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Contents Chapter 7. The Point Bar F
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FOREwORD AND ACkNOwLEDgEMENTS The s
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PLATE 1. Location of the Dacian Bas
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18 Chapter 1. Dacian Basin. General
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The analysis of the paleogeographic
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42 Chapter 2. Dacian Basin paleogeo
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58 FIGURE 2.14. Paleogeography and
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68 Chapter 3. Sediment Thickness Di
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Sedimentation in the brackish-water
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84 Chapter 4. Dacian Basin Physiogr
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94 Chapter 5. Littoral Sedimentary
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Page 124 and 125: 122 Chapter 5. Littoral Sedimentary
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Page 192 and 193: 190 Chapter 8. The Paleoenvironment
Page 200 and 201: The evolution and architecture of a
Page 202 and 203: 200 Chapter 9. Source-Areas in the
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Page 216 and 217: 214 Chapter 10. History of the Daci
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222 Chapter 10. History of the Daci
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230 Chapter 11. From Brackish-Marin
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Ai n s w o r t h r. B., Cr o w l e
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258 References hA m o r, g., et al.
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260 References mA C A r o V iC i, n
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262 References ră d A n, s.C., 200
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264 References VAsilieV, i., Kr iJ
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DACIAN BASIN - GeoEcoMar

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