The geothermal formation mechanism in the Gonghe Basin: Discussion and analysis from the geological background by Yan-fang Feng, Xiao-xu Zhang, Bo Zhang, Jiang-tao Liu, Yang-gang Wang, De-long Jia, Li-rong Hao, Zhao-yu Kong

“…On the basis of understanding the knowledge of predecessors, this paper proposes the geothermal formation mechanism of the “heat source–heat transfer–heat reservoir and caprock–thermal system” of the Gonghe Basin from the perspective of a geological background through data integration-integrated research-expert, discussion-graph, compilation-field verification and other processes: (1) Heat source: geophysical exploration and radioisotope calculations show that the heat source of heat in the basin has both the contribution of mantle and the participation of the earth’s crust, but mainly the contribution of the deep mantle. (2) Heat transfer: The petrological properties of the basin and the exposed structure position of the surface hot springs show that one transfer mode is the material of the mantle source upwells and invades from the bottom, directly injecting heat; the other is that the deep fault conducts the deep heat of the basin to the middle and lower parts of the earth’s crust, then the secondary fracture transfers the heat to the shallow part. (3) Heat reservoir and caprock: First, the convective strip-shaped heat reservoir exposed by the hot springs on the peripheral fault zone of the basin; second, the underlying hot dry rock layered heat reservoir and the upper new generation heat reservoir and caprock in the basin revealed by drilling data. (4) Thermal system: Based on the characteristics of the “heat source-heat transfer-heat reservoir and caprock”, it is preliminarily believed that the Gonghe Basin belongs to the non-magmatic heat source hydrothermal geothermal system (type II21) and the dry heat geothermal system (type II22). …”
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Seismic imaging of the mantle transition zone by Cao, Qin, Ph. D. Massachusetts Institute of Technology

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Frontiers in earth sciences: new ideas and interpretation by G. Scalera, G. Lavecchia

“…Might these forces trigger pulsating tectonic
 and magmatic activity, with mantle upwellings and large-scale emission of CO2, capable of causing dramatic changes in the composition of the atmosphere and changes at the Earths surface? …”
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Impact of mining on the metal content of dust in indigenous villages of northern Chile by Nicolás C. Zanetta-Colombo, Zoë L. Fleming, Eugenia M. Gayo, Carlos A. Manzano, Marios Panagi, Jorge Valdés, Alexander Siegmund

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Fusarium spp. an emerging fungal threat to leatherback (Dermochelys coriacea) eggs and neonates by Samantha G. Kuschke, Samantha G. Kuschke, Samantha G. Kuschke, Samantha G. Kuschke, Jeanette Wyneken, Carolyn Cray, Emily Turla, Megan Kinsella, Debra L. Miller, Debra L. Miller, Debra L. Miller

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The role of high-latitude oceans in transient climate change by Kostov, Yavor (Yavor Krasimirov)

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Spatial co-occurrence patterns of benthic microbial assemblage in response to trace metals in the Atacama Desert Coastline by Ana Zárate, Ana Zárate, Ana Zárate, Verónica Molina, Verónica Molina, Jorge Valdés, Gonzalo Icaza, Sue Ellen Vega, Alexis Castillo, Alexis Castillo, Juan A. Ugalde, Cristina Dorador, Cristina Dorador

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Combined Influences of Light and Nitrogen Enrichment on the Physiological Performance of a Golden Tide Alga (<i>Sargassum horneri</i>) by Fang Yan, Huichao Jiang, Yuanqing Ma, Cuiju Cui, Huawei Qin, Lijuan Liu, Shasha Zang, Hongyan Xing, Zhiguang Xu, Hongyan Wu

“…Accordingly, we speculated that drifting <i>S. horneri</i>, exposed to HL level on the surface of the sea, were likely to develop rapidly to form GT in eutrophic oceanic areas with upwelled and river plume NO₃⁻ or NH₄⁺ nutrients.…”
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Latitudinal variations in <i>δ</i>³⁰Si and <i>δ</i>¹⁵N signatures along the Peruvian shelf: quantifying the effects of nutrient utilization versus denitrifica... by K. Doering, K. Doering, C. Ehlert, P. Martinez, M. Frank, R. Schneider

“…However, in ocean areas where anoxic and suboxic conditions prevail, the <span class="inline-formula"><i>δ</i>¹⁵N_bulk</span> signal ultimately recorded within the sediments is also influenced by water column denitrification, causing an increase in the subsurface <span class="inline-formula"><i>δ</i>¹⁵N</span> signature of dissolved nitrate (<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M9" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msup><mi mathvariant="italic">δ</mi><mn mathvariant="normal">15</mn></msup><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">3</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="42pt" height="17pt" class="svg-formula" dspmath="mathimg" md5hash="78de53da8c88aaea660dd15d6c4ee037"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-16-2163-2019-ie00001.svg" width="42pt" height="17pt" src="bg-16-2163-2019-ie00001.png"/></svg:svg></span></span>) upwelled to the surface. Such conditions are found in the oxygen minimum zone off the coast of Peru, where, at present, an increase in subsurface <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M10" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msup><mi mathvariant="italic">δ</mi><mn mathvariant="normal">15</mn></msup><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">3</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="42pt" height="17pt" class="svg-formula" dspmath="mathimg" md5hash="e12a20ab809bbccf0d78e64582498caa"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-16-2163-2019-ie00002.svg" width="42pt" height="17pt" src="bg-16-2163-2019-ie00002.png"/></svg:svg></span></span> from north to south along the shelf is observed due to ongoing denitrification within the poleward-flowing subsurface waters, while the <span class="inline-formula"><i>δ</i>³⁰Si</span> signature of silicic acid (<span class="inline-formula"><i>δ</i>³⁰Si(OH)₄</span>) at the same time remains unchanged.…”
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