A geological map of Ethiopia and Somalia: 1973 ; 1:2.000.000 and comment with a map of major landforms
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| Format: | Book |
| Language: | English |
| Published: |
Firenze
Centro Stampa
1979
|
| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Physical Description: | VIII, 95 S. Ill., Kt. |
| ISBN: | 0080240283 |
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| 245 | 1 | 0 | |a A geological map of Ethiopia and Somalia |b 1973 ; 1:2.000.000 and comment with a map of major landforms |c by Giovanni Merla ... |
| 264 | 1 | |a Firenze |b Centro Stampa |c 1979 | |
| 300 | |a VIII, 95 S. |b Ill., Kt. | ||
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Record in the Search Index
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Titel: A geological map of Ethiopia and Somalia
Autor: Merla, Giovanni
Jahr: 1979
Contents
51. - Endertà, Tembien, Geraita.
52. - Comparison between Merla's 1936 and Mekele Sheet
stratigraphy.
53.- Waag (northern Lasta).
54. - Western Sandstones as equivalent of the whole Endertà
sequence.
Chapter 1 - INTRODUCTION by G. Merla- pag. 1
1. - The C.N.R. Maps.
2. - Mohr's and Geological Survey of Ethiopia Maps.
3.- Titles of the general maps.
4. - General maps of bordering regions for comparison.
5. - Sources and drafting of the Map.
6. - Corrections.
7. - Glacial deposits of Tigrai.
8. - Partition of the Mesozoic sediments and of the volcanites.
Chapter 2 - SUMMARY OF THE GEOLOGICAL
HISTORY by G. Merla- pag. 7
(i) The marine transgressions and sequences
9. - The peneplain in the Triassic.
10. - The marine invasion in the Jurassic.
11. - The Cretaceous and Tertiary seas.
12. - Evaporites and basinining.
13. - Present position of the basement surface.
14. - Possible effects of coastal downfaulting on modern
geography.
15. - Basement highs in Somalia and their explanation.
16. - Formational names for Mesozoic and Tertiary sequences.
17. - Post-sedimentary and pre-trappean peneplain.
(ii) Uplift of the Arabian-Ethiopian region
18. - The great doming and modern geography. The Danakil
plume.
19. - The trappic flows.
20. - The doming visualized by contours.
21. - Characters of the uplift.
22. - Unconformities connected with the uplift.
23. - Uplift stages and outflows.
(iii) Origin and sediments of the troughs
24. - The Erythraean, Danakil and Aualitic troughs. Con-
temporaneity of trough subsidence, uplift and outflows.
25. - The Sudanese-Erythraean trough. Evaporites and Carlo Ip-
polito Migliorini's salt dome hypothesis.
26. - Sedimentary sequence in the Erythraean trough.
27. - Kinematics in the Erythraean trough.
28. - Geological section across the Red Sea.
29. - Salt supply, and the nature of the crust in troughs.
30. - Sedimentary sequence in Afar.
31. - Possible Ashangi basalts in the south Red Sea pre-trough
bottom.
32. - Volcanites in the troughs.
33. - Youngest lavas and lacustrine deposits on the plateaus.
Chapter 3 - THE BASEMENT by G. Merla- pag. 19
34. - References.
35. - Partitions of the present map. High grade and low grade
metamorphites.
36. - Meaning of the separation between hm and lm. Verri,
Bibolini, Stefanini. Archaean and Algonkian cycles.
37. - Older cycles in high grade metamorphites.
38. - Correlations.
39. - Traces of life activity in lm limestones.
40. - Absolute time span to be expected in Ethiopian and Somali
basement.
41. - Time of completion of the crystalline peneplain.
42. - Value of radiometric ages in the basement.
43. - Problems raised by the « Mozambique belt » age
Appendix to chapter 3 - THE GLACIAL DEPOSITS OF
TIGRAI by P. Canuti
44. - Tigraen glacials.
45. - Comparison with the Saharan upper Cambrian and lower
Palaeozoic glacials.
Chapter 4 - THE MESOZOIC OF ETHIOPIA by G. Merla
46. - General Statements. pag. 25
(i) Erythraea
47. - Possible existence of Mesozoic sandstones in Erythraean
plateau.
(ii) The Danakil Horst
48. - References.
49. - Mesozoic sequence.
50. - Thickness of Adigrat sandstones in Danakil Horst.
(iii) Tigrai-Lasta
(iv) The Blue Nile
55. - References, and Dainelli's scheme.
56. - ?Palaeozoic and? Trias in the Blue Nile lower sandstones.
57. - Age of the Blue Nile Mesozoic.
58. - The Ambô-Gudèr sandstones.
59. - Comparison with other Mesozoic sequences.
(v) Other regions
60. - Corbettà-Alomatà.
61. - Western sandstones.
Chapter 5 - THE MESOZOIC OF SOMALIA by A. Azza-
roli P. Canuti - pag. 33
(i) General Statements
62. - Thickness, lower arenaceous units.
63. - C.I. Migliorini and the AGIP Missions 1936-1939.
(ii) Formations
64. - Mansa Guda Sandstones (Jm.).
65. - Undifferentiated Limestones and Marls in NE Kenya (J).
66. - Hamanlei Formation (Jh).
67. - Warandab Formation (Ju).
68. - Gabredarre Formation (Jo).
69. - Garbeharre Sandstone (Jp).
70. - Merehàn Sandstones (Ka).
71.- Main Gypsum (KJg).
72. - Mustahil Limestone (Km.).
73. - Ferfèr Gypsum (Kg).
74. - Belet Uen Limestone (Kb).
75. - Yesomma Sandstone (Kj).
Appendix 1 to chapter 5: THE MESOZOIC IN HARAR
MTS., CHERCHER and BALE by G. Merla
76. - Gara Mulata/Harar sequence.
77. - Comparison with the Belet Uen sequence.
78. - Main Gypsum in the Belet Uen sequence.
79. - Kulubi and Bale.
80. - Transgressive lay of the Yesomma in the Fafàn.
81. - Relationships between Yesomma and Amba Aradàm sand-
stones.
Appendix 2 to chapter 5: THE MESOZOIC OF THE
AUALITIC COAST by P. Bruni M. Fazzuoli
(i) General Statements
82. - Mesozoic sequences.
(ii) Formations
83. - Jurassic outcrops west of Erigavo.
84. - Lower basalt flows.
85. - Adigrat Sandstones.
86. - Sa Wer Limestone.
87. - Bihèn Limestone.
88. - Gahodleh Shales.
89. - Wanderer Limestone.
90. - Daghani Shales.
91.- Gawan Limestone.
92. - Jurassic outcrops east of Erigavo.
93. - Ahl Medo series.
94. - Cretaceous series.
95. - Yesomma Sandstone.
96. - Tisjè Formation.
(iii) Recapitulation on Palaeogeography
97. - Jurassic.
98. - Cretaceous.
Appendix 3 to chapter 5: CURRENT RESEARCH IN
SOUTH-WESTERN SOMALIA by P. Canuti, M. Fazzuoli
P. Tacconi
VII
Chapter 6 - THE TERTIARY OF SOMALIA, AND A
SHORT ACCOUNT ON THE QUATERNARY, by A. Az-
zaroli- pag. 45
99. - Marine transgression of Tertiary.
100. - Auradu Limestone (Ea).
101. - Taleh Evaporites (Et).
102. - Karkar Limestone (Ek).
103. - Marine Oligocene and Miocene (Oh Ml).
104.- Scusciuban Formation (Me).
105. - Upper Conglomerates (Mc).
106. - Late Tertiary and Quaternary sediments.
Chapter 7 - THE VOLCANITES by E. Abbate M. Sagri
- pag. 49
107. - Sources and stratigraphie partition.
(i) Intrusives associated with the sedimentary
sequences of Ethiopia
108. - Makalle Dolerite, Paleogene (Td).
(ii) Volcanites of the northern Ethiopian plateau
109. - General statements.
110. - Basalt flows interbedded in Jurassic and Cretaceous sedi-
ments, Jurassic to Cretaceous (KJß).
111. - Blue Nile Basalts, Paleocene? to Oligocene? (Tí).
112. - Ashangi Basalts, Oligocene to Miocene (T/J).
113. - Amba Aibà Basalts, Oligocene to Miocene (Ta).
114. - Amba Alaji Rhyolites, Miocene (Ma).
115. - Termaber Basalts, Miocene to Pliocene (Ttf).
116. - Peralkaline silicic lavas and domes of the Axum-Adua
area, Pliocene? (Pn).
117. - Undifferentiated volcanites, Oligocene to Miocene (Tk).
(iii) Wollega and SWEthiopia volcanites
118.- General statements.
119. - Omo Basalts, Oligocene to Miocene (To).
120. - Jima Volcanics, Oligocene to Miocene (Te).
121. - Wollega Basalts, Miocene to Pliocene (Tv).
(iv) Volcanites of the Somali plateau
122. - General statements.
123. - Arussi and Bale Basalts, Upper Oligocene to Upper Mioce-
ne (Tb/3).
124. - Ghinir Unit, Pliocene to Present (Qji).
(v) Northern Kenya and southern Ethiopia volcanites
125. - General statements.
126. - Nephelinite-phonolite central volcanoes, Miocene (Mv).
127. - Turkana-Tertale fissurai basalts, Oligocene to Miocene
(Tr).
128. - Rhyolites, Pliocene (Pg).
129. - Fissurai basalts, Pliocene (P/3).
130. - Basic and intermediate effusives of central volcanoes, Plio-
cene (P£).
131. - Basalts, Quaternary (Q/3).
(vi) Volcanites and associated intrusives of Afar,
Ethiopian Rift and Southern Lake Tana area
132. - General statements.
a) Afar.
133. - Volcano-tectonic units.
134. - Alkaline and peralkaline granites, Lower Miocene (My).
135. - Silicic massifs, lava flows, domes and rhyolitic ignimbrites,
Miocene to Pleistocene (QTÀ).
136. - Fissurai basaltic lavas, Miocene to Pleistocene (QT/3).
137. - Mainly basaltic lavas connected to volcanic edifices, Plei-
stocene to Present (Qr).
138. - Differentiated lava flows, Pleistocene to Present (Qa).
139. - Volcanites intercalated in thé Red Series (Ti), Miocene to
Pliocene.
b) Ethiopian Rift.
140. - General statements.
141. - Ignimbrites of the rift floor, Pliocene to Present (PA).
142. - Basalt lava flows connected to volcanic centers, Pleistocene
to Present (Qr).
143. - Alkali trachytes and subordinate basalts, Pliocene to Pre-
sent (Qff).
144. - Pantelleritic lavas and pumice flows, Pleistocene to Present
(QÖ-
c) Southern Lake Tana area.
145. - General statements.
146. - Basalt lava flows connected to volcanic centers, Pleistocene
(Qr).
(vii) Other volcanites
147. - Volcanites of unknown age and/or lithology (Z).
(viii) Conclusive remarks
148. - Radiometric ages: results and constraints.
149. - Volcanites distribution and major tectonic lineaments.
150. - Stages of volcanological evolution.
151. - Structural evolution and volcanism of the Ethiopian and
Somali regions and adjoining areas.
Appendix to chapter 7: LIST OF RADIOMETRIC AGES OF
THE VOLCANITES AND ASSOCIATED ROCKS OF
ETHIOPIA, SOMALIA AND NORTHERN KENIA, by E.
Abbate M. Sagri.
Chapter 8 - PHOTOINTERPRETATION OF THE SOMALI
PLATEAU BETWEEN THE GANALE AND THE WEBI
SHEBELI, by P. Tacconi - pag. 77
152. - Sources.
153. - Air photo formational boundaries, a) Jurassic.
154. - Air photo formational boundaries, b) Cretaceous.
155. - Volcanites.
Chapter 9 - MORPHOLOGY by G. Merla - pag. 79
156. - Major Landforms.
(i) TectónicaI features
157.- Tectonical steps.
158. - Fault slopes.
159. - Fault scarps.
160. - Dip slopes.
161. - Flexure axis and tectonically controlled drainage.
162. - General characters of the Ethiopian plateau.
163. - Salt domes.
164. - Hypothesis of an oriented cracking of the Afar basalts due
to underlying salt.
(ii) Erosional features
165. - Canyons and embanked valleys.
166. - Scarps.
167. - Inselberge and Monadnocks.
(iii) Pianation surfaces and volcanic features
168. - The Ethiopian peneplain and volcanoes.
Chapter 10 - TECTONICS by P. Canuti G. Merla - pag. 85
169. - The Ethiopian plateau.
170. - The Somali plateau and table-land.
171. - Comment of cross-section n. 1.
172. - Comment of cross-section n. 2.
173. - Comment of cross-section n. 3.
List of References - pag. 89
Figures 16-23 - pag. 96
Plates - at end |
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| geographic_facet | Somalia Äthiopien |
| id | DE-604.BV026298242 |
| illustrated | Illustrated |
| indexdate | 2025-03-14T11:02:10Z |
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| institution_GND | (DE-588)1001684-3 |
| isbn | 0080240283 |
| language | English |
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| publishDateSort | 1979 |
| publisher | Centro Stampa |
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| spelling | A geological map of Ethiopia and Somalia 1973 ; 1:2.000.000 and comment with a map of major landforms by Giovanni Merla ... Firenze Centro Stampa 1979 VIII, 95 S. Ill., Kt. txt rdacontent n rdamedia nc rdacarrier Karte (DE-588)4029783-4 gnd rswk-swf Geologie (DE-588)4020227-6 gnd rswk-swf Somalia (DE-588)4077509-4 gnd rswk-swf Äthiopien (DE-588)4000639-6 gnd rswk-swf Somalia (DE-588)4077509-4 g Geologie (DE-588)4020227-6 s Karte (DE-588)4029783-4 s DE-604 Äthiopien (DE-588)4000639-6 g Merla, Giovanni 1906-1984 (DE-588)1054653690 edt Consiglio nazionale delle ricerche Sonstige (DE-588)1001684-3 oth HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=021880940&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | A geological map of Ethiopia and Somalia 1973 ; 1:2.000.000 and comment with a map of major landforms Karte (DE-588)4029783-4 gnd Geologie (DE-588)4020227-6 gnd |
| subject_GND | (DE-588)4029783-4 (DE-588)4020227-6 (DE-588)4077509-4 (DE-588)4000639-6 |
| title | A geological map of Ethiopia and Somalia 1973 ; 1:2.000.000 and comment with a map of major landforms |
| title_auth | A geological map of Ethiopia and Somalia 1973 ; 1:2.000.000 and comment with a map of major landforms |
| title_exact_search | A geological map of Ethiopia and Somalia 1973 ; 1:2.000.000 and comment with a map of major landforms |
| title_full | A geological map of Ethiopia and Somalia 1973 ; 1:2.000.000 and comment with a map of major landforms by Giovanni Merla ... |
| title_fullStr | A geological map of Ethiopia and Somalia 1973 ; 1:2.000.000 and comment with a map of major landforms by Giovanni Merla ... |
| title_full_unstemmed | A geological map of Ethiopia and Somalia 1973 ; 1:2.000.000 and comment with a map of major landforms by Giovanni Merla ... |
| title_short | A geological map of Ethiopia and Somalia |
| title_sort | a geological map of ethiopia and somalia 1973 1 2 000 000 and comment with a map of major landforms |
| title_sub | 1973 ; 1:2.000.000 and comment with a map of major landforms |
| topic | Karte (DE-588)4029783-4 gnd Geologie (DE-588)4020227-6 gnd |
| topic_facet | Karte Geologie Somalia Äthiopien |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=021880940&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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