Extreme Nd isotopic variation in the Trinity Ophiolite Complex and the role of melt/rock reactions in the oceanic lithosphere

1995 ◽  
Vol 121 (4) ◽  
pp. 337-350 ◽  
Author(s):  
G. Gruau ◽  
J. Bernard-Griffiths ◽  
C. Lécuyer ◽  
O. Henin ◽  
J. Macé ◽  
...  
Keyword(s):  
Oceanic Lithosphere ◽  
Ophiolite Complex ◽  
Isotopic Variation ◽  
The Trinity

THEORIES OF THE MISSIONARY VOCATION OF THEOLOGICAL EDUCATION IN POST-SOVIET PROTESTANTISM

2020 ◽  
pp. 78-92
Author(s):  
Valentyn Syniy
Keyword(s):  
21St Century ◽  
Theological Education ◽  
Educational Activity ◽  
Spiritual Education ◽  
General Recognition ◽  
The Church ◽  
The Trinity ◽  
Formal Construction

It is emphasized that the involvement of missionary theology in the discussion of ways to develop spiritual education allowed post-soviet Protestantism to successfully overcome differences in the vision of the formal construction of education, and then move on to discussions about its content. There was a gradual overcoming of modern individualism, the growing role of communities, the replacement of monologue models of mission with dialogical ones. The idea of the seminary as a community that is not self-sufficient, but serves the church as a community, has gained general recognition. The church also came to be understood as serving an eschatological ideal community similar to the Trinity community. The formation of community and dialogical models of missionary and educational activity allows Ukrainian Protestantism to effectively adapt to the realities of the beginning of the 21st century and to be proactive in today's society.

Melt Percolation, Melt-Rock Reaction and Oxygen Fugacity in Supra-Subduction Zone Mantle and Lower Crust from the Leka Ophiolite Complex, Norway

2021 ◽  
Author(s):  
Brian O’Driscoll ◽  
Julien Leuthold ◽  
Davide Lenaz ◽  
Henrik Skogby ◽  
James M D Day ◽  
...  
Keyword(s):  
Single Crystal ◽  
Subduction Zone ◽  
Oxygen Fugacity ◽  
Lower Crust ◽  
Oceanic Lithosphere ◽  
Ophiolite Complex ◽  
Global Comparison ◽  
Oceanic Spreading ◽  
Melt Percolation ◽  
Lower Crustal

Abstract Samples of peridotites and pyroxenites from the mantle and lower crustal sections of the Leka Ophiolite Complex (LOC; Norway) are examined to investigate the effects of melt-rock reaction and oxygen fugacity variations in the sub-arc oceanic lithosphere. The LOC is considered to represent supra-subduction zone (SSZ) oceanic lithosphere, but also preserves evidence of pre-SSZ magmatic processes. Here we combine field and microstructural observations with mineral chemical and structural analyses of different minerals from the major lithologies of the LOC. Wehrlite and websterite bodies in both the mantle and lower crust contain clinopyroxene likely formed at a pre-SSZ stage, characterised by high Al, high Cr, low Mg crystal cores. These clinopyroxenes also exhibit low Al, low Cr, high Mg outer rims and intracrystalline dissolution surfaces, indicative of reactive melt percolation during intrusion and disruption of these lithologies by later, SSZ-related, dunite-forming magmas. Chromian-spinel compositional variations correlate with lithology; dunite-chromitite Cr-spinels are characterised by relatively uniform and high TiO2 and Al2O3, indicating formation by melt-rock reaction associated with SSZ processes. Harzburgite Cr-spinel compositions are more variable but preserve a relatively high Al2O3, low TiO2 endmember that may reflect crystallisation in a pre-SSZ oceanic spreading centre setting. An important finding of this study is that the LOC potentially preserves the petrological signature of a transition between oceanic spreading centre processes and subsequent supra-subduction zone magmatism. Single crystal Cr-spinel Fe3+/ΣFe ratios calculated on the basis of stoichiometry (from electron microprobe [EPMA] and crystal structural [X-ray diffraction; XRD] measurements) correlate variably with those calculated by point-source (single crystal) Mössbauer spectroscopy. Average sample EPMA Fe3+/ΣFe ratios overestimate or underestimate the Mössbauer-derived values for harzburgites, and always overestimate the Mössbauer Fe3+/ΣFe ratios for dunites and chromitites. The highest Fe3+/ΣFe ratios, irrespective of method of measurement, are therefore generally associated with dunites and chromitites, and yield calculated log(fO2)FMQ values of up to ~+1.8. While this lends support to the formation of the dunites and chromitites during SSZ-related melt percolation in the lower part of the LOC, it also suggests that these melts were not highly oxidised, compared to typical arc basalts (fO2FMQ of >+2). This may in turn reflect the early (forearc) stage of subduction zone activity preserved by the LOC and implies that some of the arc tholeiitic and boninitic lava compositions preserved in the upper portion of the ophiolite are not genetically related to the mantle and lower crustal rocks, against which they exhibit tectonic contacts. Our new data also have implications for the use of ophiolite chromitites as recorders of mantle oxidation state through time; a global comparison suggests that the Fe3+/ΣFe signatures of ophiolite chromitites are likely to have more to do with local environmental petrogenetic conditions in sub-arc systems than large length-scale mantle chemical evolution.

scholarly journals The Nature of Theology and the Extent of the Atonement

Perichoresis ◽  
2018 ◽  
Vol 16 (4) ◽  
pp. 3-18
Author(s):  
Stephen R. Holmes
Keyword(s):  
Fourth Century ◽  
Gregory Of Nyssa ◽  
2 Corinthians ◽  
Doctrine Of The Trinity ◽  
Scriptural Exegesis ◽  
Biblical Texts ◽  
The Relationship ◽  
English Baptist ◽  
The Trinity

Abstract This article considers the post-Reformation debates over the extent of the Atonement. It traces the origins of these debates from the articles of the Arminian Remonstrance of 1610 through the declarations of the supporters of the Synod of Dort in 1618-19. The debate is then considered in relation to an English Baptist context, and specifically the exegetical dispute over the meaning of the word ‘all’ in 2 Corinthians 5:14-15 and Romans 3:23-4. Three options are examined and the various difficulties in arbitrating between these various interpretations. Recognising these difficulties, the article goes on to explore the relationship between scriptural exegesis and theology with reference to the formulation of the ecumenical doctrine of the Trinity in the fourth century. It argues that while theology should always attempt to be consistent with the exegetical data on occasion it proves inconclusive, as in the case of the debate over the extent of the atonement. In such cases the role of theology becomes one of mediation as it seeks a way of reading the texts of Scripture that allows them to be heard without contradicting each other. Again, this is illustrated from the fourth century and the Christology of Basil of Caesarea and Gregory of Nyssa. Returning to the question of atonement with this understanding of the task of theology the article seeks to propose a way to reconcile the biblical texts which speak of the atonement as both universal and limited.

scholarly journals The Thingness of the Thing: The Role of Everyday Objects in Becket Miracle Windows

2014 ◽  
Vol 11 (1) ◽  
pp. 152-157
Author(s):  
Dana Vasiliu
Keyword(s):  
Middle Ages ◽  
Phenomenal World ◽  
Ordinary Objects ◽  
Everyday Objects ◽  
The Trinity ◽  
The Middle Ages

Abstract In “The Waning of the Middle Ages”, J. Huizinga has pointed out that “all things would be absurd if their meaning would be exhausted by their function and their place in the phenomenal world, if by their essence they did not reach into a world beyond this.” (1924:201) Starting from this assumption, I purport to analyze the role/roles played by everyday/ordinary objects in the miracle stories depicted in the Trinity Chapel glazing and argue that their individuation/haecceity is subject to practices of ritualistic and artistic encodings

scholarly journals The role of Edge-Driven Convection in the generation of volcanism I: a 2D systematic study

2020 ◽  
Author(s):  
Antonio Manjón-Cabeza Córdoba ◽  
Maxim Ballmer
Keyword(s):  
Numerical Models ◽  
High Volume ◽  
Oceanic Lithosphere ◽  
Companion Paper ◽  
Small Scale ◽  
Continental Lithosphere ◽  
Transient Phenomenon ◽  
Mantle Viscosity ◽  
Wide Range

Abstract. The origin of intraplate volcanism is not explained by the plate tectonic theory, and several models have been put forward for explanation. One of these models involves Edge-Driven Convection (EDC), in which cold and thick continental lithosphere is juxtaposed to warm and thin oceanic lithosphere to trigger convective instability. To test whether EDC can produce long-lived high-volume magmatism, we run numerical models of EDC for a wide range of mantle properties and edge (i.e., the oceanic-continental transition) geometries. We find that the most important parameters that govern EDC are the rheological paramaters mantle viscosity η0 and activation energy Ea. However, even the maximum melting volumes found in our models are insufficient to account for island-building volcanism on old seafloor, such as at the Canary Islands and Cape Verde. Also, beneath old seafloor, localized EDC-related melting commonly transitions into widespread melting due to small-scale sublithospheric convection, inconsistent with the distribution of volcanism at these volcanic chains. In turn, EDC is a good candidate to sustain the formation of small seamounts on young seafloor, as it is a highly transient phenomenon that occurs in all our models soon after initiation. In a companion paper, we investigate the implications of interaction of EDC with mantle-plume activity.

scholarly journals The role of edge-driven convection in the generation of volcanism – Part 1: A 2D systematic study

Solid Earth ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 613-632
Author(s):  
Antonio Manjón-Cabeza Córdoba ◽  
Maxim D. Ballmer
Keyword(s):  
Numerical Models ◽  
High Volume ◽  
Oceanic Lithosphere ◽  
Companion Paper ◽  
Rheological Parameters ◽  
Small Scale ◽  
Transient Phenomenon ◽  
Mantle Viscosity ◽  
Wide Range

Abstract. The origin of intraplate volcanism is not explained by plate tectonic theory, and several models have been put forward for explanation. One of these models involves edge-driven convection (EDC), in which cold and thick continental lithosphere is juxtaposed with warm and thin oceanic lithosphere to trigger convective instability. To test whether EDC can produce long-lived high-volume magmatism, we run numerical models of EDC for a wide range of mantle properties and edge (i.e., the oceanic–continental transition) geometries. We find that the most important parameters that govern EDC are the rheological parameters mantle viscosity η0 and activation energy Ea. However, even the maximum melting volumes predicted by our most extreme cases are insufficient to account for island-building volcanism on old seafloor, such as at the Canary Islands and Cabo Verde. Also, beneath old seafloor, localized EDC-related melting commonly transitions into widespread melting due to small-scale sublithospheric convection, inconsistent with the distribution of volcanism at these volcano chains. In turn, EDC is a good candidate to sustain the formation of small seamounts on young seafloor, as it is a highly transient phenomenon that occurs in all our models soon after initiation. In a companion paper, we investigate the implications of interaction of EDC with mantle plume activity (Manjón-Cabeza Córdoba and Ballmer, 2021).

Duns Scotus and William of Ockham

2021 ◽  
pp. 52-67
Author(s):  
Richard Cross
Keyword(s):  
Cognitive Theory ◽  
Religious Language ◽  
William Of Ockham ◽  
Divine Simplicity ◽  
Beatific Vision ◽  
Duns Scotus ◽  
Dialectical Process ◽  
The Trinity ◽  
Do So

Duns Scotus and William of Ockham engage with Aquinas’ thought in fundamentally negative ways. They never make distinctively Thomist positions their own, and when they use Aquinas’ thought, they do so merely as a way of sharpening their own theologies through the dialectical process of rejecting an opponent’s view. This chapter first considers the role of Aquinas’ thought in Scotus’ teaching on religious language and univocity, divine simplicity and omnipresence, the Trinity, cognitive theory, the question of the first object of cognition, angelic individuation, the beatific vision, the plurality of substantial forms, free will, and normative ethics. A second section discusses Aquinas’ place in Ockham’s teaching on common natures, intuitive cognition, divine ideas, and the nature of grace.

The Vocabulary of the Septuagint and the Church Fathers

2021 ◽  
pp. 117-132
Author(s):  
Gilles Dorival
Keyword(s):  
Old Testament ◽  
Church Fathers ◽  
The New Testament ◽  
Doctrine Of The Trinity ◽  
Ex Nihilo ◽  
Hapax Legomenon ◽  
Creation Of Matter ◽  
The Church ◽  
The Trinity

The role of the Septuagint in the building of the Christian identity during the first Christian centuries is more important than it is generally said. The word ‘testament’ or ‘covenant’, for example, comes from the Septuagint, via the New Testament. The Greek and Latin liturgies are filled with references to the Septuagint. The same is true in the case of the Christian spirituality: for instance, the concept of the Christian life as a migration comes from the Septuagint. The Christian hermeneutics is indebted to the Greek Bible: even if knowledge of the allegorical method comes from the Greek philosophers (and Philo), support could be found for it in the verses of the Greek Bible. Finally, the theological vocabulary of the Christians was founded upon the Greek Bible. For instance, in the case of the doctrine of the Trinity, the word ‘person’ comes from the Septuagint. Furthermore, some passages of the Greek translation gave rise to theological interpretations which are not possible on the grounds of the Hebrew text. In Gen 1:2, the Septuagint reads ‘the earth was invisible and unorganized’ and this came to be quoted both in support of the creation of matter ex nihilo. In Exod 17:16, where the Hebrew has a difficult hapax legomenon, the Greek speaks about the ‘hidden hand’ with which the Lord makes war against Amalek; this ‘hidden hand’ played a role in the Christian doctrine of the Logos, which is hidden in the Old Testament.

Contemporary Theology in Asia: Current Challenges and Future Directions

2020 ◽  
Vol 85 (2) ◽  
pp. 145-168
Author(s):  
David Thang Moe
Keyword(s):  
Common Good ◽  
Interreligious Dialogue ◽  
Future Directions ◽  
The Common Good ◽  
The Common ◽  
The Trinity

This article explores old issues and current challenges from new perspectives. It offers explorations of the role of the Trinity in interreligious dialogue and the roles of interreligions in Asian contemporary theology. It proposes some methodological concepts of how Christians should reconsider people of other faiths through the lens of the Trinity, and also how Christians should witness to shalom against sin in engagement with other faiths for the common good of social, gender and ecological liberation in Asia.

scholarly journals Trends in missional ecclesiology

2012 ◽  
Vol 68 (1) ◽  
Author(s):  
Cornelius J.P. Niemandt
Keyword(s):  
Local Community ◽  
Kingdom Of God ◽  
Missional Church ◽  
Missional Ecclesiology ◽  
Missional Theology ◽  
The Relationship ◽  
World Mission ◽  
The Church ◽  
The Trinity

Missional ecclesiology emerged as one of the significant trends in mission studies and ecumenical discussion in the last couple of years. What were these trends in missional ecclesiology? What kind of missional theology formed and fuelled the renewed interest in missional ecclesiology? What impact flowed from the important ecumenical events in 2010 (Edinburgh 2010 World Mission Conference, World Communion of Reformed Churches and Lausanne III)? This article explained the term ‘missional church’ and explored missional theology as participating in the life of the Trinity and thus mission as ‘joining in with the Spirit’. It explained the relationship between ecclesiology and missiology. The trends in missional ecclesiology were tracked by focusing on an incarnational approach to the church; relationality in the community of believers; the role of the kingdom of God; discernment as the first act in mission; imago Dei and creativity; the ecclesia and local community and finally mission and ethics.

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