The Orera section (Calatayud Basin, NE Spain) - Universiteit Utrecht

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Chapter T VT-III 91 90 VII 88 86 84 82 80 VI 78 LY - - - - - --sa - - - - - - - -67 - -~ ~ M M VT-II 76 74 72 70 68 66 64 62 V Clay Carbonate __ Field traced bedto-bed correlation _____ Sedimentary pattern correlation 20 10 Om ORE DB 6 , "~ - -- J " " rl---~~~~::-:: " 60 58 56 54 Figure 2. 52 Cyclostratigraphic 50 correlations between 48 subsections and construction of the 46 Orera Composite IV 44 Section (OCS). 42 Continuous intervals of subsections 40 comprising the most 38 36 prominent and ideal developed cyclicity are selected for the 34 OCS and are 32 represented next to the lithological 30 column of the OCS. III 29 No scaling corrections 28 have been applied. Numbers along 26 lithological columns 24 correspond to 22 sedimentary cycles as 20 described in the text. 18 Roman numbers along OCS column 16 indicate the largeseaIe cycl es of 14 II alternating carbonate-rich 12 intervals with distinct 10 basic small-scale 8 cycles and carbonate 6 poor (clay-rich) 4 intervals with thick 2 and indistinct basic 1 small-scale cycles. 26
Astronomical forcIng of sedimentary cycles in the Calatayud Basin tracing of cycles 18 and 19 (including successive cycles) from eM to ORE. Two intervals can be distinguished in subsection ORE. The lower interval, comprising cycles 18-27, is characterised by regular cycles often with distinct, thick carbonate beds that split up into thinner beds. The upper interval (cycles 28-34) is dominated by reddish coloured clays wherein cycles are poorly developed and carbonate beds are less pronounced, or even absent. The yellow uppermost part of ORE (from cycle 34 upward) consists of a gravel bed and silty to sandy layers with intercalated caliches. At the top a thick carbonate-rich bed with typical channel morphology occurs. Altogether, this type offacies has not been recognised elsewhere in the sections studied and we therefore are cautious with interpreting the cyclostratigraphy ofthis uppermost part ofthe subsection. Valdelosterreros I (VT-I) Subsection VT-I contains cycles 29-59 and four potential extra cycles 29A, 3lA, 50A and 55A (Figure 2). Within VT-I four distinct intervals can be distinguished. The lower interval comprises cycles 29-32 characterised by thick developed cycles with reddish to brown coloured clays and weakly developed carbonate beds. The next interval (cycles 33-40) shows a very regular cyclicity with distinct carbonate beds (Figure 3A). Figure 3. A) Photograph of the lower part of VT-I showing the basic smallscale, carbonate-clay alternation, cycles and the alternations of thin and thick carbonate beds (thick beds are marked with an asterisk). The third interval (cycles 41 5I) is characterised by the recurrence of poorly developed and more clay rich cycles often with less distinct and double developed carbonate beds. Finally, in the fourth and uppermost interval (cycles 51-59), the cycles are regular and distinct again and are accompanied by a marked increase in thickness of the carbonate beds. Distinct features of this subsection are the red clays of cycles 45 and 48 but the most striking IS the conspicuous red coloured silt of cycle 50. This bed can be easily recognised throughout the study area. 27
Page 2 and 3: GEOLOGICA ULTRAIECTINA Mededelingen
Page 4 and 5: Astronomical forcing in continental
Page 6 and 7: Voor mijn ouders
Page 8 and 9: Contents Bibliography II Introducti
Page 10 and 11: Introduction and summary During the
Page 12 and 13: common and many of these repetitive
Page 14 and 15: confirmed by magnetostratigraphy, r
Page 16 and 17: especially related to obliquity and
Page 18 and 19: Chapter [ Introduction Time control
Page 20 and 21: Chapter l and L6pez Martinez, 1985)
Page 24 and 25: Chapter 1 Overlap LY The short subs
Page 26 and 27: Chapter I Cycle hierarchy Visual ch
Page 28 and 29: Chapter [ The natural remanent magn
Page 30 and 31: Chapter I maximum unblocking temper
Page 32 and 33: Chapter I enables us to define the
Page 34 and 35: Chapter I the astronomical polarity
Page 36 and 37: Chapter [ Valdelosterreros I (VT-I)
Page 38 and 39: Chapter 2 The Orera section (Calata
Page 40 and 41: The Orera section Orera section is
Page 42 and 43: The Orera section 20 ~ 10 Om ocs I
Page 44 and 45: Chapter 3 Paleoenvironmental reCOll
Page 46 and 47: Paleoenvironmental reconstruction R
Page 48 and 49: Paleoenvironmental reconstruction (
Page 50 and 51: Paleoenvironmental reconstruction m
Page 52 and 53: Paleoenvironmencal recon)trllction
Page 54 and 55: Paleoenvironmental reconstruction o
Page 56 and 57: Paleoenvlronn1ental reconstruction
Page 58 and 59: PaleoenvIronmental reconostruction
Page 60 and 61: Paleoenvironmental reconstruction N
Page 62 and 63: Paleoenvironmental reconstruction c
Page 64 and 65: Paleoenvironmental reconstruction 1
Page 66 and 67: Paleoenvironmental reconstruction r
Page 68 and 69: Paleoenvironmental reconstruction p
Page 70 and 71: Paleoenvironmental reconstruction r
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Paleoenvironnlental reconstruction
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Chapter 4 An astronomical polarity
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APTS for the middle Miocene ages fo
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I APTS for rhe middle Miocene Des C
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Depth domain Entire records Cycle i
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APTS for the middle Miocene The fil
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APTS for the middle Miocene saprope
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APTS for the middle M,occne L*-valu
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APTS for the middle Miocene 165 ,.,
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APTS for the middle Miocene The int
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APTS for the middle Miocene though
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Chron Lithology and cycle Stratigra
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APTS for the middle Miocene Ages of
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APTS for the middle Miocene interpr
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APTS for the middle Miocene Finally
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Chapter 5 Introduction Sedimentary
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Chapter 5 ofthe Iberian Chain and t
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Chapler 5 Canizar 25 * 20 g~~:~ _ 3
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Chapter 5 Figure 3b. indicated Phot
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Chapter 5 multierestatus, which are
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Chapter 5 above 600°C, to a maximu
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Chapter 5 80 Cascante Depth domain
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Chapter 5 Figure 6. Correlation of
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Chapter 5 ' l 46 L'-value maximum t
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Chapter 5 Cascante Age Model-1 9.4
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Chapter 5 points ofthe base ofC5n.r
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Chapter 5 Phase relationship The pa
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Chapter 6 One new subchron (Csr.2r-
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New subchron and cryptochrons requi
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New subchron and cryptochrons Corre
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NRM New subchron and cryptochrons (
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New subchron and cryptochrons throu
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New subchron and cryptochrons Figur
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New subchron and cryptochrons Linea
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New subchron and cryptochrons 6 (Fi
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New subchron and cryptochrons hemat
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New subchron and cryptochrons I ~g:
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New subchron and cryptochrous prefe
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References Abdul Aziz, H., Calvo, J
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Calvo,].P., Abdul Aziz, H., Hilgen,
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Dekkers, M.J., 1989. Magnetic prope
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Hilgen, FJ., Krijgsman, W., Raffi,
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Earth from -20 Myr to +IO Myr. Astr
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Pisias, N.G, Dauphin, J.P. and Sanc
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Shackleton, N.J., Crowhurst, S., Ha
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ecord. Rev. Ceophys. Space Phys. 15
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correspond to periods of prolonged
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extending the APTS further down int
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- op basis van multidisciplinaire e
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van polariteit verwisselde heeft ge
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en In meren. Acht, gedeeltelijk ove
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In hoofdstuk 4 wordt het bewijs gel
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Acknowledgements Many (ex-)colleagu
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Curriculum Vitae Hayf;la Abdul Azi7
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The Orera section (Calatayud Basin, NE Spain) - Universiteit Utrecht

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