In 1996, Warp 4 added Java and speech recognition software. IBM also released server editions of Warp 3 and Warp 4 which bundled IBM's LAN Server product directly into the operating system installation. A personal version of Lotus Notes was also included, with a number of template databases for contact management, brainstorming, and so forth. The UK-distributed free demo CD-ROM of OS/2 Warp essentially contained the entire OS and was easily, even accidentally, cracked[clarification needed], meaning that even people who liked it did not have to buy it. This was seen as a backdoor tactic to increase the number of OS/2 users, in the belief that this would increase sales and demand for third-party applications, and thus strengthen OS/2's desktop numbers. This suggestion was bolstered by the fact that this demo version had replaced another which was not so easily cracked, but which had been released with trial versions of various applications. In 2000, the July edition of Australian Personal Computer magazine bundled software CD-ROMs, included a full version of Warp 4 that required no activation and was essentially a free release. Special versions of OS/2 2.11 and Warp 4 also included symmetric multiprocessing (SMP) support.
The famous Martenberg section of the eastern Rhenish Massif, Germany, type-section of classical Frasnian goniatite and conodont zonations, has been restudied in order to document the microfacies development and to refine the conodont stratigraphy around the global semichatovae Event/Transgression, the proposed level to define a future upper Frasnian substage. More than 8.000 platform elements were identified and include new taxa. Palmatolepis jamieae is subdivided into the subspecies Pa. jamieae jamieae, Pa. jamieae savagei n. ssp., Pa. jamieae rosa n. ssp., and Pa. jamieae ssp. δ. Another new species, Pa. adorfensis n. sp., was previously partly identified as Pa. jamieae, while Pa. descendens n. sp. has previously been described in open nomenclature from Inner Mongolia. Morphotypes are defined in Icriodus symmetricus, Pa. ljaschenkoae, and Pa. proversa. A global literature survey shows that the eustatic semichatovae Event can be recognised in more than 20 regions of all continents with (sub)tropical Upper Devonian outcrops. At Martenberg, the transgression is preceded by a thin but distinctive interval with unconformities, microbial mats, sheet cracks, and currents that brought in the regionally youngest volcaniclastics. The new conodont data confirm that no typical Pa. jamieae (sensu the holotype) occur in the two beds originally supposed to represent the jamieae Zone in its reference section. We fully support the conclusion of Ovnatanova and Kononova (2020) that the jamieae Zone should be abandoned. Early Pa. jamieae subspecies and the related new taxa enter at Martenberg and in a few other regions in the globally easily recognisable Frasnian Zone 10 (= plana Zone). Frasnian Zone 11 (feisti Zone) is subdivided into subzones FZ 11a (= feisti Subzone) and FZ 11b (= nasuta Subzone). The base of the latter coincides with the semichatovae Transgression, the semichatovae Subzone of more shallow shelf settings, and is proposed to define in future the upper Frasnian substage base. On a global scale, the Martenberg section is currently the best bed-by-bed documented section for facies changes, conodont and goniatite biostratigraphy at the middle/upper Frasnian transition. Therefore, it is a prime candidate for a future GSSP selection. A global literature survey identified more than 20 other pelagic conodont successions that have the potential for precise correlation and a better understanding of the environmental changes associated with the semichatovae Event.
Becker and House (1998, p. 20) and Klapper and Becker (1999, p. 345) noted a previously neglected break in facies right before the level of Pa. semichatovae reported by Ziegler and Sandberg (1990). A thin intercalation of unconformities, volcaniclastics, and sheet cracks gives physical evidence of re-transgression pulses associated with the semichatovae Event. This stimulated us to re-investigate at Martenberg the middle/upper Frasnian transition combining macroscopic lithology, biostratigraphy, as well as bio- and microfacies. This involves the following research questions:
Proposed Frasnian substage position, ammonoid zonal keys after Becker et al. (1993) and Wedekind (1913) (in brackets), conodont zone assignments of various authors, bed numbering, lithological log (scale 1 : 10), re-transgressive trends, position of depophases of Johnson et al. (1985), positions of new conodont samples, and microfacies data for Martenberg section NE. Between beds R-Q and Q lies the regressive interval, here exaggerated (scale 1 : 1) in order to show details, with previously neglected sheet cracks, unconformities, a microbial layer, and volcaniclastics (tuffites)
On the basis of the nomenclature of Dunham (1962), Hartenfels (2011) defined 19 modified microfacies types for outer shelf settings, which can be assigned to the standard facies zones (1B to 4) of Flügel (2004) and can be divided into two facies series, MF-A: facies below storm wave base, MF-B: facies supposedly within the influence of storm waves or bottom currents. According to Hartenfels (2011), this modification is necessary because hemipelagic or neritic carbonates cannot be classified with sufficient differentiation in the classic microfacies zone model of Wilson (1975) and its critical review by Flügel (2004). However, it should be noted that current-induced sedimentation in the subphotic, pelagic realm may originate from contourites rather than from storms. In the Rhenish Massif, the modified classification sensu Hartenfels (2011) was successfully applied by Lüddecke et al. (2017) on the Upper Ballberg Quarry, a middle Famennian hemipelagic seamount section. Since the Martenberg section was deposited on top of a drowned volcanic seamount, an older but comparable depositional setting is assumed to interprete the microfacies (Fig. 13).
The middle-upper Frasnian palaeogeographic setting of the volcanic Martenberg seamount can be characterised as constantly shallow pelagic and below the euphotic zone. This is in accord with the rich conodont assemblages and macrofaunas (e.g. Holzapfel 1882; Paeckelmann 1936; House and Ziegler 1977) that are dominated by cephalopods associated with specialised, subphotic benthic faunal elements, such as buchiolid and other bivalves, rare gastropods, very rare proetid trilobites, and small-sized, deeper-water solitary rugose corals. The fauna and microfacies of Bed R represent MF A4 sensu Hartenfels (2011), which suggests calm and slow deposition below the photic zone and storm wave base. Based on the strong bioturbation, the sea-floor was fully oxic. Microstromatolites (Fig. 13a2) are typical for such condensed pelagic sedimentation (compare Préat et al. 2008; Hartenfels 2011; Hartenfels and Becker 2016). Dacryoconarid nests may stem from the burrowing (Fig. 13a1).
At Martenberg, the eustatic semichatovae Event/Transgression coincides with the base of Frasnian Subzone 11b (nasuta Subzone) and is associated with a significant goniatite radiation marking UD I-I (do Iß faunas of House and Ziegler 1977). It is preceded in Frasnian Subzone 11a by a partly overlooked thin regressive interval with unconformities, microbial layers, sheet cracks, and volcaniclastics deposited by currents. An earlier, minor re-transgression couplet is indicated by carbonate microfacies and conodont biofacies within Frasnian Zone 10 (plana Zone). 2b1af7f3a8