Emilio Herrero-Bervera's research while affiliated with University of Hawaiʻi at Mānoa and other places

Publications (203)

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Pseudotachylytes that evolved through melting are usually observed in regional slip shear zones fault rock. Ifewara-Ilesha shear zone was demarcated by transcurrent fault into east and west units: granite-gneisses, quartz schist, metapellites, quartzites, and ultramafic-mafic metapelites respectively. Scanty records abound in pseudotachylytes Ifewa...
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Paleomagnetic measurements, coupled with ⁴⁰Ar/³⁹Ar dating, are improving our understanding of the geodynamo by providing detailed terrestrial lava records of the short-term behavior of the Earth's magnetic field. As part of an investigation of the Wai'anae Volcano, Oahu, and the short-term behavior of the geomagnetic field, we sampled a long volcan...
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The Corinth basin (Greece) is a young continental rift that recorded cyclic basin paleoenvironment variations (i.e., marine to lacustrine) caused by glacio-eustatic sea level fluctuations during its initial connection to the global oceans. The Corinth syn-rift sequence offers therefore a unique opportunity to determine the timing and modality of co...
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Sixteen rhyolitic and dacitic Cretaceous and Paleocene‐Eocene lavas from the Lesser Caucasus have been subjected to paleomagnetic and multimethod paleointensity experiments to analyze the variations of the Earth's magnetic field. Paleointensity experiments were performed with two methods. Thellier‐type experiments with the IZZI method on 65 specime...
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This paper presents an age–depth model based on an ultra‐high‐resolution, 80‐m‐thick sedimentary succession from a marine continental shelf basin, the Kattegat. This is an area of dynamic deglaciation of the Fennoscandian Ice Sheet during the Late Pleistocene. The Kattegat is also a transitional area between the saline North Sea and the brackish Ba...
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In the last decades, palaeomagnetic research has provided important information about the past variation of the Earth's magnetic field (EMF) from its origin to the present day. However, questions regarding the origin and evolution of the EMF as well as the frequency and spatial distribution of its variations still remain open to debate. This Specia...
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Archaeomagnetic records from low-latitude sites are very scarce. Thus, the information about the geomagnetic field evolution in South America or Ecuador is sparse and more data are needed to constrain the field evolution in South America. In this study we present new absolute archaeointensity results from a set of ¹⁴C well-dated (i.e. calibrated ag...
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We have studied the rock and palaeomagnetic properties and ¹⁴ C dating of a c. 205 m core from Site M0060 (Anholt Loch, BSB1 at Kattegat), recovering clays, (silty) sands and sandy clays. We took 297 8 cc samples at c. 50 cm intervals down-core. χ was measured along with AF demagnetization of the NRM up to 80 mT. ChRM was isolated between 0 and 25...
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In the last decades, palaeomagnetic research has provided us with a picture of the temporal and spatial behaviour of the Earth's magnetic field (EMF) from its origin up to the present day. Well-dated palaeomagnetic data offer important sources of information about the past variation of the geomagnetic field and have shown that it is characterized b...
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p>This Article contains errors in Reference 40 which is incorrectly given as: Palyvos, N., Pantosti, D. & Zabci, C. Paleoseismological evidence of recent earthquakes on the 1967 Mudurnu Valley earthquake segment of the North Anatolian fault. Bull. Seis. Soc. Am. 97, 1646–1661 (2007).</p
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A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has not been fixed in the paper.
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Young rifts are shaped by combined tectonic and surface processes and climate, yet few records exist to evaluate the interplay of these processes over an extended period of early rift-basin development. Here, we present the longest and highest resolution record of sediment flux and paleoenvironmental changes when a young rift connects to the global...
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The primary objective of International Ocean Discovery Program Expedition 381 was to retrieve a record of early continental rifting and basin evolution from the Corinth rift, central Greece. Continental rifting is fundamental for the formation of ocean basins, and active rift zones are dynamic regions of high geohazard potential. However, the detai...
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The present work constitutes a primary initiative whereby the initially achieved results are released, following a detailed regional thermomagnetic study of granitoids from the Precambrian basement rocks of southwestern Nigeria. In this respect, a selection of multifunctional kappabridge (MFK1-FA), Scanning electron microscope, alternating field de...
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Abstract In order to investigate the role of dikes in the volcanic evolution and the triggering mechanisms of catastrophic mass wasting volcanoes, we have sampled for a pilot study, seven dikes within the Wai’anae volcano, Oahu, Hawaii. The width of the dikes ranged between 0.4 and 2.5 m. This work focuses on the characterization of the magma flow...
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IODP Expedition 357 used two seabed drills to core 17 shallow holes at 9 sites across Atlantis Massif ocean core complex (Mid-Atlantic Ridge 30°N). The goals of this expedition were to investigate serpentinization processes and microbial activity in the shallow subsurface of highly altered ultramafic and mafic sequences that have been uplifted to t...
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Serpentinized and metasomatized peridotites intruded by gabbros and dolerites have been drilled on the southern wall of the Atlantis Massif (Mid-Atlantic Ridge, 30°N) during International Ocean Discovery Program (IODP) Expedition 357. They occur in seven holes from five sites making up an east-west trending, spreading-parallel profile that crosscut...
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Hawaii is an ideal place for reconstructing the past variations of the Earth's magnetic field in the Pacific Ocean thanks to the almost continuous volcanic activity during the last 10 000 yrs. We present here an updated compilation of palaeomagnetic data from historic and radiocarbon dated Hawaiian lava flows available for the last ten millennia. A...
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The Sierra Madre Occidental is a thick continental arc related to the subduction of the Farallon plate beneath North America resulting in a very intense and widespread Cretaceous to Cenozoic magmatic and tectonic activity. The 28 My old Atengo ignimbrite outcrops in the southern Sierra Madre Occidental, northwestern Mexico. From 12 sites that belon...
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International Ocean Discovery Program (IODP) Expedition 357 successfully cored an east–west transect across the southern wall of Atlantis Massif on the western flank of the Mid-Atlantic Ridge (MAR) to study the links between serpentinization processes and microbial activity in the shallow subsurface of highly altered ultra- mafic and mafic sequence...
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This chapter documents the primary procedures and methods employed by the operational and scientific groups during the offshore and onshore phases of International Ocean Discovery Program (IODP) Expedition 357. This information concerns only shipboard and Onshore Science Party (OSP) methods described in the site chapters. Methods for postexpedition...
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We have conducted a whole-rock type magnetic and absolute paleointensity determination of the red dacite of the Duffer Formation from the Pilbara Craton, Australia. The age of the dated rock unit is 3467 ± 5 Ma (95% confidence). Vector analyses results of the step-wise alternating field demagnetization (NRM up to 100 mT) and thermal demagnetization...
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This chapter documents the primary operational, curatorial, and analytical procedures and methods employed during the offshore and onshore phases of Integrated Ocean Drilling Program (IODP) Expedition 347. This information concerns only shipboard and Onshore Science Party (OSP) methodologies and data as described in the site chapters. Methods for p...
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Integrated Ocean Drilling Program Expedition 347 aimed to retrieve sediments from different settings of the Baltic Sea, encompassing the last interglacial–glacial cycle to address scientific questions along four main research themes: 1. Climate and sea level dynamics of marine isotope Stage (MIS) 5, including onsets and terminations; 2. Complexitie...
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Introduction During Integrated Ocean Drilling Program (IODP) Expedition 347, cores were recovered from four holes at Site M0062 (Ånger-manälven River estuary), with an average site recovery of 99%. In addition, two shallow gravity (Rumohr) cores were acquired. The water depth was 69.3 m, with no tidal range. Existing data sets, including seismic re...
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Introduction During Integrated Ocean Drilling Program (IODP) Expedition 347, cores were recovered from two holes at Site M0066 (Born-holm Basin), with an average site recovery of 77.7%. The water depth was 82 m, with a tidal range of <10 cm. Existing data sets, including seismic reflection profiles, were evaluated prior to coring to attempt to guid...
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Archaeointensity data have been obtained successfully using the Thellier-Coe protocol from twelve potsherds recovered from the vicinity of the “Piramide del Sol”, Teotihuacan, Mexico. In order to understand the magnetic behavior of the samples, we have conducted low-field versus temperature (k-T) experiments to determine the magnetic carriers of th...
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We analyze magnetic properties from Ocean Drilling Program (ODP)/Integrated ODP (IODP) Hole 1256D (6°44.1' N, 91°56.1' W) on the Cocos Plate in ~15.2 Ma oceanic crust generated by superfast seafloor spreading, the only drill hole that has sampled all three oceanic crust layers in a tectonically undisturbed setting. Fuzzy c-means cluster analysis an...
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The dominant dipolar component of the Earth's magnetic field has been steadily weakening for at least the last 170 years. Prior to these direct measurements, archaeomagnetic records show short periods of significantly elevated geomagnetic intensity. These striking phenomena are not captured by current field models and their relationship to the rece...
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We studied the detailed characteristics of the Pringle Falls excursion from samples at the original site recovered from four profiles drilled along the Deschutes River, Oregon. We drilled 827 samples spaced along 5 km for their detailed directional study. The profiles registered a highresolution (>10 cm/ka) palaeomagnetic record of the excursion (c...
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We have studied the rock magnetic and palaeomagnetic properties of a 41 m long core (Hole M0058A) recovering calcareous sediments located seaward of Noggin Reef, offshore Queensland, Australia to decipher the magnetostratigrapy of the site. We deployed 1 cm3 samples at every 10 cm down-core and subsampled the core by means of U-channels in order to...
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The Monte Cagnero sedimentary section, which crops out in the northeastern Apennines near Urbania in the Umbria–Marche Basin (Italy), contains well-exposed strata spanning the middle Eocene to lower Oligocene interval. We use an integrated magnetobiostratigraphic approach to generate a high-resolution age model for the Monte Cagnero section, with t...
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No consensus has been reached so far on the properties of the geomagnetic field during reversals or on the main features that might reveal its dynamics. A main characteristic of the reversing field is a large decrease in the axial dipole and the dominant role of non-dipole components. Other features strongly depend on whether they are derived from...
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Using the most recent global database of paleomagnetic directions for the past 4 Myr we have tested whether the far-sided effect of Wilson (1970, 1971) remains a stable feature of the time-averaged field. We found out that this characteristic persists for all sub-time intervals as well as for different sites distributions. The U-shaped pattern of t...
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The baked contact test is traditionally used to prove the origin of a NRM in old rocks. It consists in the comparison of the NRM from an igneous rock with that of the rock which has been reheated by that igneous rock. In the vicinity of the City of Queretaro (Mexico) such a situation is given by an upper Tertiary lava flow which has reheated profou...
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We have studied the rock magnetic and paleomagnetic properties of a 41 meter long core (Hole M0058A) that was drilled recovering fine calcareous sediments located seaward of Noggin Reef, off Queensland, Australia at the end of the Expedition 325, "Great Barrier Reef Environmental Changes" (GBREC), of the Integrated Ocean Drilling Program to deciphe...
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Volcanic records of reversals are mostly exempt of complications linked to their magnetization process and thus potentially tell us the most significant story about the field variations prevailing during these periods. We have found no convincing indication supporting the presence of long-term non-zonal features governing the transitional field. A...
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Oceanic crust is the carrier of the marine magnetic anomalies and is therefore a valuable archive of geomagnetic information. ODP/IODP Hole 1256D was the first to sample an entire sequence of oceanic crust down to the gabbro. We studied the vertical variation of magnetic remanence carriers by means of scanning electron microscopy, microanalysis and...
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We have investigated the magnetic mineralogy and absolute paleointensity of basalt samples from Site 1256 cored during ODP Leg 206 and IODP Expeditions 309 and 312. The site is located on the Cocos Plate 5km east of the transition zone between marine magnetic anomalies 5Bn.2n and 5Br (~15Ma). The deepest hole, Hole 1256D, extends 250 m through sedi...